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873fedc653987adda46d90a23b35d8a9ab96fc48
[mesa.git] / src / mesa / main / formats.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.7
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (c) 2008-2009 VMware, Inc.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include "imports.h"
28 #include "formats.h"
29 #include "mfeatures.h"
30
31
32 /**
33 * Information about texture formats.
34 */
35 struct gl_format_info
36 {
37 gl_format Name;
38
39 /** text name for debugging */
40 const char *StrName;
41
42 /**
43 * Base format is one of GL_RED, GL_RG, GL_RGB, GL_RGBA, GL_ALPHA,
44 * GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY, GL_YCBCR_MESA,
45 * GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL, GL_DUDV_ATI.
46 */
47 GLenum BaseFormat;
48
49 /**
50 * Logical data type: one of GL_UNSIGNED_NORMALIZED, GL_SIGNED_NORMALIZED,
51 * GL_UNSIGNED_INT, GL_INT, GL_FLOAT.
52 */
53 GLenum DataType;
54
55 GLubyte RedBits;
56 GLubyte GreenBits;
57 GLubyte BlueBits;
58 GLubyte AlphaBits;
59 GLubyte LuminanceBits;
60 GLubyte IntensityBits;
61 GLubyte IndexBits;
62 GLubyte DepthBits;
63 GLubyte StencilBits;
64
65 /**
66 * To describe compressed formats. If not compressed, Width=Height=1.
67 */
68 GLubyte BlockWidth, BlockHeight;
69 GLubyte BytesPerBlock;
70 };
71
72
73 /**
74 * Info about each format.
75 * These must be in the same order as the MESA_FORMAT_* enums so that
76 * we can do lookups without searching.
77 */
78 static struct gl_format_info format_info[MESA_FORMAT_COUNT] =
79 {
80 {
81 MESA_FORMAT_NONE, /* Name */
82 "MESA_FORMAT_NONE", /* StrName */
83 GL_NONE, /* BaseFormat */
84 GL_NONE, /* DataType */
85 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
86 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
87 0, 0, 0 /* BlockWidth/Height,Bytes */
88 },
89 {
90 MESA_FORMAT_RGBA8888, /* Name */
91 "MESA_FORMAT_RGBA8888", /* StrName */
92 GL_RGBA, /* BaseFormat */
93 GL_UNSIGNED_NORMALIZED, /* DataType */
94 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
95 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
96 1, 1, 4 /* BlockWidth/Height,Bytes */
97 },
98 {
99 MESA_FORMAT_RGBA8888_REV, /* Name */
100 "MESA_FORMAT_RGBA8888_REV", /* StrName */
101 GL_RGBA, /* BaseFormat */
102 GL_UNSIGNED_NORMALIZED, /* DataType */
103 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
104 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
105 1, 1, 4 /* BlockWidth/Height,Bytes */
106 },
107 {
108 MESA_FORMAT_ARGB8888, /* Name */
109 "MESA_FORMAT_ARGB8888", /* StrName */
110 GL_RGBA, /* BaseFormat */
111 GL_UNSIGNED_NORMALIZED, /* DataType */
112 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
113 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
114 1, 1, 4 /* BlockWidth/Height,Bytes */
115 },
116 {
117 MESA_FORMAT_ARGB8888_REV, /* Name */
118 "MESA_FORMAT_ARGB8888_REV", /* StrName */
119 GL_RGBA, /* BaseFormat */
120 GL_UNSIGNED_NORMALIZED, /* DataType */
121 8, 8, 8, 8, /* Red/Green/Blue/AlphaBits */
122 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
123 1, 1, 4 /* BlockWidth/Height,Bytes */
124 },
125 {
126 MESA_FORMAT_RGBX8888, /* Name */
127 "MESA_FORMAT_RGBX8888", /* StrName */
128 GL_RGB, /* BaseFormat */
129 GL_UNSIGNED_NORMALIZED, /* DataType */
130 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
131 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
132 1, 1, 4 /* BlockWidth/Height,Bytes */
133 },
134 {
135 MESA_FORMAT_RGBX8888_REV, /* Name */
136 "MESA_FORMAT_RGBX8888_REV", /* StrName */
137 GL_RGB, /* BaseFormat */
138 GL_UNSIGNED_NORMALIZED, /* DataType */
139 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
140 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
141 1, 1, 4 /* BlockWidth/Height,Bytes */
142 },
143 {
144 MESA_FORMAT_XRGB8888, /* Name */
145 "MESA_FORMAT_XRGB8888", /* StrName */
146 GL_RGB, /* BaseFormat */
147 GL_UNSIGNED_NORMALIZED, /* DataType */
148 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
149 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
150 1, 1, 4 /* BlockWidth/Height,Bytes */
151 },
152 {
153 MESA_FORMAT_XRGB8888_REV, /* Name */
154 "MESA_FORMAT_XRGB8888_REV", /* StrName */
155 GL_RGB, /* BaseFormat */
156 GL_UNSIGNED_NORMALIZED, /* DataType */
157 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
158 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
159 1, 1, 4 /* BlockWidth/Height,Bytes */
160 },
161 {
162 MESA_FORMAT_RGB888, /* Name */
163 "MESA_FORMAT_RGB888", /* StrName */
164 GL_RGB, /* BaseFormat */
165 GL_UNSIGNED_NORMALIZED, /* DataType */
166 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
167 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
168 1, 1, 3 /* BlockWidth/Height,Bytes */
169 },
170 {
171 MESA_FORMAT_BGR888, /* Name */
172 "MESA_FORMAT_BGR888", /* StrName */
173 GL_RGB, /* BaseFormat */
174 GL_UNSIGNED_NORMALIZED, /* DataType */
175 8, 8, 8, 0, /* Red/Green/Blue/AlphaBits */
176 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
177 1, 1, 3 /* BlockWidth/Height,Bytes */
178 },
179 {
180 MESA_FORMAT_RGB565, /* Name */
181 "MESA_FORMAT_RGB565", /* StrName */
182 GL_RGB, /* BaseFormat */
183 GL_UNSIGNED_NORMALIZED, /* DataType */
184 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
185 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
186 1, 1, 2 /* BlockWidth/Height,Bytes */
187 },
188 {
189 MESA_FORMAT_RGB565_REV, /* Name */
190 "MESA_FORMAT_RGB565_REV", /* StrName */
191 GL_RGB, /* BaseFormat */
192 GL_UNSIGNED_NORMALIZED, /* DataType */
193 5, 6, 5, 0, /* Red/Green/Blue/AlphaBits */
194 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
195 1, 1, 2 /* BlockWidth/Height,Bytes */
196 },
197 {
198 MESA_FORMAT_ARGB4444, /* Name */
199 "MESA_FORMAT_ARGB4444", /* StrName */
200 GL_RGBA, /* BaseFormat */
201 GL_UNSIGNED_NORMALIZED, /* DataType */
202 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
203 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
204 1, 1, 2 /* BlockWidth/Height,Bytes */
205 },
206 {
207 MESA_FORMAT_ARGB4444_REV, /* Name */
208 "MESA_FORMAT_ARGB4444_REV", /* StrName */
209 GL_RGBA, /* BaseFormat */
210 GL_UNSIGNED_NORMALIZED, /* DataType */
211 4, 4, 4, 4, /* Red/Green/Blue/AlphaBits */
212 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
213 1, 1, 2 /* BlockWidth/Height,Bytes */
214 },
215 {
216 MESA_FORMAT_RGBA5551, /* Name */
217 "MESA_FORMAT_RGBA5551", /* StrName */
218 GL_RGBA, /* BaseFormat */
219 GL_UNSIGNED_NORMALIZED, /* DataType */
220 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
221 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
222 1, 1, 2 /* BlockWidth/Height,Bytes */
223 },
224 {
225 MESA_FORMAT_ARGB1555, /* Name */
226 "MESA_FORMAT_ARGB1555", /* StrName */
227 GL_RGBA, /* BaseFormat */
228 GL_UNSIGNED_NORMALIZED, /* DataType */
229 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
230 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
231 1, 1, 2 /* BlockWidth/Height,Bytes */
232 },
233 {
234 MESA_FORMAT_ARGB1555_REV, /* Name */
235 "MESA_FORMAT_ARGB1555_REV", /* StrName */
236 GL_RGBA, /* BaseFormat */
237 GL_UNSIGNED_NORMALIZED, /* DataType */
238 5, 5, 5, 1, /* Red/Green/Blue/AlphaBits */
239 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
240 1, 1, 2 /* BlockWidth/Height,Bytes */
241 },
242 {
243 MESA_FORMAT_AL44, /* Name */
244 "MESA_FORMAT_AL44", /* StrName */
245 GL_LUMINANCE_ALPHA, /* BaseFormat */
246 GL_UNSIGNED_NORMALIZED, /* DataType */
247 0, 0, 0, 4, /* Red/Green/Blue/AlphaBits */
248 4, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
249 1, 1, 1 /* BlockWidth/Height,Bytes */
250 },
251 {
252 MESA_FORMAT_AL88, /* Name */
253 "MESA_FORMAT_AL88", /* StrName */
254 GL_LUMINANCE_ALPHA, /* BaseFormat */
255 GL_UNSIGNED_NORMALIZED, /* DataType */
256 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
257 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
258 1, 1, 2 /* BlockWidth/Height,Bytes */
259 },
260 {
261 MESA_FORMAT_AL88_REV, /* Name */
262 "MESA_FORMAT_AL88_REV", /* StrName */
263 GL_LUMINANCE_ALPHA, /* BaseFormat */
264 GL_UNSIGNED_NORMALIZED, /* DataType */
265 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
266 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
267 1, 1, 2 /* BlockWidth/Height,Bytes */
268 },
269 {
270 MESA_FORMAT_AL1616, /* Name */
271 "MESA_FORMAT_AL1616", /* StrName */
272 GL_LUMINANCE_ALPHA, /* BaseFormat */
273 GL_UNSIGNED_NORMALIZED, /* DataType */
274 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
275 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
276 1, 1, 4 /* BlockWidth/Height,Bytes */
277 },
278 {
279 MESA_FORMAT_AL1616_REV, /* Name */
280 "MESA_FORMAT_AL1616_REV", /* StrName */
281 GL_LUMINANCE_ALPHA, /* BaseFormat */
282 GL_UNSIGNED_NORMALIZED, /* DataType */
283 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
284 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
285 1, 1, 4 /* BlockWidth/Height,Bytes */
286 },
287 {
288 MESA_FORMAT_RGB332, /* Name */
289 "MESA_FORMAT_RGB332", /* StrName */
290 GL_RGB, /* BaseFormat */
291 GL_UNSIGNED_NORMALIZED, /* DataType */
292 3, 3, 2, 0, /* Red/Green/Blue/AlphaBits */
293 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
294 1, 1, 1 /* BlockWidth/Height,Bytes */
295 },
296 {
297 MESA_FORMAT_A8, /* Name */
298 "MESA_FORMAT_A8", /* StrName */
299 GL_ALPHA, /* BaseFormat */
300 GL_UNSIGNED_NORMALIZED, /* DataType */
301 0, 0, 0, 8, /* Red/Green/Blue/AlphaBits */
302 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
303 1, 1, 1 /* BlockWidth/Height,Bytes */
304 },
305 {
306 MESA_FORMAT_A16, /* Name */
307 "MESA_FORMAT_A16", /* StrName */
308 GL_ALPHA, /* BaseFormat */
309 GL_UNSIGNED_NORMALIZED, /* DataType */
310 0, 0, 0, 16, /* Red/Green/Blue/AlphaBits */
311 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
312 1, 1, 2 /* BlockWidth/Height,Bytes */
313 },
314 {
315 MESA_FORMAT_L8, /* Name */
316 "MESA_FORMAT_L8", /* StrName */
317 GL_LUMINANCE, /* BaseFormat */
318 GL_UNSIGNED_NORMALIZED, /* DataType */
319 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
320 8, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
321 1, 1, 1 /* BlockWidth/Height,Bytes */
322 },
323 {
324 MESA_FORMAT_L16, /* Name */
325 "MESA_FORMAT_L16", /* StrName */
326 GL_LUMINANCE, /* BaseFormat */
327 GL_UNSIGNED_NORMALIZED, /* DataType */
328 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
329 16, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
330 1, 1, 2 /* BlockWidth/Height,Bytes */
331 },
332 {
333 MESA_FORMAT_I8, /* Name */
334 "MESA_FORMAT_I8", /* StrName */
335 GL_INTENSITY, /* BaseFormat */
336 GL_UNSIGNED_NORMALIZED, /* DataType */
337 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
338 0, 8, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
339 1, 1, 1 /* BlockWidth/Height,Bytes */
340 },
341 {
342 MESA_FORMAT_I16, /* Name */
343 "MESA_FORMAT_I16", /* StrName */
344 GL_INTENSITY, /* BaseFormat */
345 GL_UNSIGNED_NORMALIZED, /* DataType */
346 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
347 0, 16, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
348 1, 1, 2 /* BlockWidth/Height,Bytes */
349 },
350 {
351 MESA_FORMAT_YCBCR, /* Name */
352 "MESA_FORMAT_YCBCR", /* StrName */
353 GL_YCBCR_MESA, /* BaseFormat */
354 GL_UNSIGNED_NORMALIZED, /* DataType */
355 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
356 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
357 1, 1, 2 /* BlockWidth/Height,Bytes */
358 },
359 {
360 MESA_FORMAT_YCBCR_REV, /* Name */
361 "MESA_FORMAT_YCBCR_REV", /* StrName */
362 GL_YCBCR_MESA, /* BaseFormat */
363 GL_UNSIGNED_NORMALIZED, /* DataType */
364 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
365 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
366 1, 1, 2 /* BlockWidth/Height,Bytes */
367 },
368 {
369 MESA_FORMAT_R8,
370 "MESA_FORMAT_R8",
371 GL_RED,
372 GL_UNSIGNED_NORMALIZED,
373 8, 0, 0, 0,
374 0, 0, 0, 0, 0,
375 1, 1, 1
376 },
377 {
378 MESA_FORMAT_RG88,
379 "MESA_FORMAT_RG88",
380 GL_RG,
381 GL_UNSIGNED_NORMALIZED,
382 8, 8, 0, 0,
383 0, 0, 0, 0, 0,
384 1, 1, 2
385 },
386 {
387 MESA_FORMAT_RG88_REV,
388 "MESA_FORMAT_RG88_REV",
389 GL_RG,
390 GL_UNSIGNED_NORMALIZED,
391 8, 8, 0, 0,
392 0, 0, 0, 0, 0,
393 1, 1, 2
394 },
395 {
396 MESA_FORMAT_R16,
397 "MESA_FORMAT_R16",
398 GL_RED,
399 GL_UNSIGNED_NORMALIZED,
400 16, 0, 0, 0,
401 0, 0, 0, 0, 0,
402 1, 1, 2
403 },
404 {
405 MESA_FORMAT_RG1616,
406 "MESA_FORMAT_RG1616",
407 GL_RG,
408 GL_UNSIGNED_NORMALIZED,
409 16, 16, 0, 0,
410 0, 0, 0, 0, 0,
411 1, 1, 4
412 },
413 {
414 MESA_FORMAT_RG1616_REV,
415 "MESA_FORMAT_RG1616_REV",
416 GL_RG,
417 GL_UNSIGNED_NORMALIZED,
418 16, 16, 0, 0,
419 0, 0, 0, 0, 0,
420 1, 1, 4
421 },
422 {
423 MESA_FORMAT_ARGB2101010,
424 "MESA_FORMAT_ARGB2101010",
425 GL_RGBA,
426 GL_UNSIGNED_NORMALIZED,
427 10, 10, 10, 2,
428 0, 0, 0, 0, 0,
429 1, 1, 4
430 },
431 {
432 MESA_FORMAT_Z24_S8, /* Name */
433 "MESA_FORMAT_Z24_S8", /* StrName */
434 GL_DEPTH_STENCIL, /* BaseFormat */
435 GL_UNSIGNED_NORMALIZED, /* DataType */
436 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
437 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
438 1, 1, 4 /* BlockWidth/Height,Bytes */
439 },
440 {
441 MESA_FORMAT_S8_Z24, /* Name */
442 "MESA_FORMAT_S8_Z24", /* StrName */
443 GL_DEPTH_STENCIL, /* BaseFormat */
444 GL_UNSIGNED_NORMALIZED, /* DataType */
445 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
446 0, 0, 0, 24, 8, /* Lum/Int/Index/Depth/StencilBits */
447 1, 1, 4 /* BlockWidth/Height,Bytes */
448 },
449 {
450 MESA_FORMAT_Z16, /* Name */
451 "MESA_FORMAT_Z16", /* StrName */
452 GL_DEPTH_COMPONENT, /* BaseFormat */
453 GL_UNSIGNED_NORMALIZED, /* DataType */
454 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
455 0, 0, 0, 16, 0, /* Lum/Int/Index/Depth/StencilBits */
456 1, 1, 2 /* BlockWidth/Height,Bytes */
457 },
458 {
459 MESA_FORMAT_X8_Z24, /* Name */
460 "MESA_FORMAT_X8_Z24", /* StrName */
461 GL_DEPTH_COMPONENT, /* BaseFormat */
462 GL_UNSIGNED_NORMALIZED, /* DataType */
463 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
464 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
465 1, 1, 4 /* BlockWidth/Height,Bytes */
466 },
467 {
468 MESA_FORMAT_Z24_X8, /* Name */
469 "MESA_FORMAT_Z24_X8", /* StrName */
470 GL_DEPTH_COMPONENT, /* BaseFormat */
471 GL_UNSIGNED_NORMALIZED, /* DataType */
472 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
473 0, 0, 0, 24, 0, /* Lum/Int/Index/Depth/StencilBits */
474 1, 1, 4 /* BlockWidth/Height,Bytes */
475 },
476 {
477 MESA_FORMAT_Z32, /* Name */
478 "MESA_FORMAT_Z32", /* StrName */
479 GL_DEPTH_COMPONENT, /* BaseFormat */
480 GL_UNSIGNED_NORMALIZED, /* DataType */
481 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
482 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
483 1, 1, 4 /* BlockWidth/Height,Bytes */
484 },
485 {
486 MESA_FORMAT_S8, /* Name */
487 "MESA_FORMAT_S8", /* StrName */
488 GL_STENCIL_INDEX, /* BaseFormat */
489 GL_UNSIGNED_INT, /* DataType */
490 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
491 0, 0, 0, 0, 8, /* Lum/Int/Index/Depth/StencilBits */
492 1, 1, 1 /* BlockWidth/Height,Bytes */
493 },
494 {
495 MESA_FORMAT_SRGB8,
496 "MESA_FORMAT_SRGB8",
497 GL_RGB,
498 GL_UNSIGNED_NORMALIZED,
499 8, 8, 8, 0,
500 0, 0, 0, 0, 0,
501 1, 1, 3
502 },
503 {
504 MESA_FORMAT_SRGBA8,
505 "MESA_FORMAT_SRGBA8",
506 GL_RGBA,
507 GL_UNSIGNED_NORMALIZED,
508 8, 8, 8, 8,
509 0, 0, 0, 0, 0,
510 1, 1, 4
511 },
512 {
513 MESA_FORMAT_SARGB8,
514 "MESA_FORMAT_SARGB8",
515 GL_RGBA,
516 GL_UNSIGNED_NORMALIZED,
517 8, 8, 8, 8,
518 0, 0, 0, 0, 0,
519 1, 1, 4
520 },
521 {
522 MESA_FORMAT_SL8,
523 "MESA_FORMAT_SL8",
524 GL_LUMINANCE,
525 GL_UNSIGNED_NORMALIZED,
526 0, 0, 0, 0,
527 8, 0, 0, 0, 0,
528 1, 1, 1
529 },
530 {
531 MESA_FORMAT_SLA8,
532 "MESA_FORMAT_SLA8",
533 GL_LUMINANCE_ALPHA,
534 GL_UNSIGNED_NORMALIZED,
535 0, 0, 0, 8,
536 8, 0, 0, 0, 0,
537 1, 1, 2
538 },
539 {
540 MESA_FORMAT_SRGB_DXT1, /* Name */
541 "MESA_FORMAT_SRGB_DXT1", /* StrName */
542 GL_RGB, /* BaseFormat */
543 GL_UNSIGNED_NORMALIZED, /* DataType */
544 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
545 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
546 4, 4, 8 /* 8 bytes per 4x4 block */
547 },
548 {
549 MESA_FORMAT_SRGBA_DXT1,
550 "MESA_FORMAT_SRGBA_DXT1",
551 GL_RGBA,
552 GL_UNSIGNED_NORMALIZED,
553 4, 4, 4, 4,
554 0, 0, 0, 0, 0,
555 4, 4, 8 /* 8 bytes per 4x4 block */
556 },
557 {
558 MESA_FORMAT_SRGBA_DXT3,
559 "MESA_FORMAT_SRGBA_DXT3",
560 GL_RGBA,
561 GL_UNSIGNED_NORMALIZED,
562 4, 4, 4, 4,
563 0, 0, 0, 0, 0,
564 4, 4, 16 /* 16 bytes per 4x4 block */
565 },
566 {
567 MESA_FORMAT_SRGBA_DXT5,
568 "MESA_FORMAT_SRGBA_DXT5",
569 GL_RGBA,
570 GL_UNSIGNED_NORMALIZED,
571 4, 4, 4, 4,
572 0, 0, 0, 0, 0,
573 4, 4, 16 /* 16 bytes per 4x4 block */
574 },
575
576 {
577 MESA_FORMAT_RGB_FXT1,
578 "MESA_FORMAT_RGB_FXT1",
579 GL_RGB,
580 GL_UNSIGNED_NORMALIZED,
581 4, 4, 4, 0, /* approx Red/Green/BlueBits */
582 0, 0, 0, 0, 0,
583 8, 4, 16 /* 16 bytes per 8x4 block */
584 },
585 {
586 MESA_FORMAT_RGBA_FXT1,
587 "MESA_FORMAT_RGBA_FXT1",
588 GL_RGBA,
589 GL_UNSIGNED_NORMALIZED,
590 4, 4, 4, 1, /* approx Red/Green/Blue/AlphaBits */
591 0, 0, 0, 0, 0,
592 8, 4, 16 /* 16 bytes per 8x4 block */
593 },
594
595 {
596 MESA_FORMAT_RGB_DXT1, /* Name */
597 "MESA_FORMAT_RGB_DXT1", /* StrName */
598 GL_RGB, /* BaseFormat */
599 GL_UNSIGNED_NORMALIZED, /* DataType */
600 4, 4, 4, 0, /* approx Red/Green/Blue/AlphaBits */
601 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
602 4, 4, 8 /* 8 bytes per 4x4 block */
603 },
604 {
605 MESA_FORMAT_RGBA_DXT1,
606 "MESA_FORMAT_RGBA_DXT1",
607 GL_RGBA,
608 GL_UNSIGNED_NORMALIZED,
609 4, 4, 4, 4,
610 0, 0, 0, 0, 0,
611 4, 4, 8 /* 8 bytes per 4x4 block */
612 },
613 {
614 MESA_FORMAT_RGBA_DXT3,
615 "MESA_FORMAT_RGBA_DXT3",
616 GL_RGBA,
617 GL_UNSIGNED_NORMALIZED,
618 4, 4, 4, 4,
619 0, 0, 0, 0, 0,
620 4, 4, 16 /* 16 bytes per 4x4 block */
621 },
622 {
623 MESA_FORMAT_RGBA_DXT5,
624 "MESA_FORMAT_RGBA_DXT5",
625 GL_RGBA,
626 GL_UNSIGNED_NORMALIZED,
627 4, 4, 4, 4,
628 0, 0, 0, 0, 0,
629 4, 4, 16 /* 16 bytes per 4x4 block */
630 },
631 {
632 MESA_FORMAT_RGBA_FLOAT32,
633 "MESA_FORMAT_RGBA_FLOAT32",
634 GL_RGBA,
635 GL_FLOAT,
636 32, 32, 32, 32,
637 0, 0, 0, 0, 0,
638 1, 1, 16
639 },
640 {
641 MESA_FORMAT_RGBA_FLOAT16,
642 "MESA_FORMAT_RGBA_FLOAT16",
643 GL_RGBA,
644 GL_FLOAT,
645 16, 16, 16, 16,
646 0, 0, 0, 0, 0,
647 1, 1, 8
648 },
649 {
650 MESA_FORMAT_RGB_FLOAT32,
651 "MESA_FORMAT_RGB_FLOAT32",
652 GL_RGB,
653 GL_FLOAT,
654 32, 32, 32, 0,
655 0, 0, 0, 0, 0,
656 1, 1, 12
657 },
658 {
659 MESA_FORMAT_RGB_FLOAT16,
660 "MESA_FORMAT_RGB_FLOAT16",
661 GL_RGB,
662 GL_FLOAT,
663 16, 16, 16, 0,
664 0, 0, 0, 0, 0,
665 1, 1, 6
666 },
667 {
668 MESA_FORMAT_ALPHA_FLOAT32,
669 "MESA_FORMAT_ALPHA_FLOAT32",
670 GL_ALPHA,
671 GL_FLOAT,
672 0, 0, 0, 32,
673 0, 0, 0, 0, 0,
674 1, 1, 4
675 },
676 {
677 MESA_FORMAT_ALPHA_FLOAT16,
678 "MESA_FORMAT_ALPHA_FLOAT16",
679 GL_ALPHA,
680 GL_FLOAT,
681 0, 0, 0, 16,
682 0, 0, 0, 0, 0,
683 1, 1, 2
684 },
685 {
686 MESA_FORMAT_LUMINANCE_FLOAT32,
687 "MESA_FORMAT_LUMINANCE_FLOAT32",
688 GL_LUMINANCE,
689 GL_FLOAT,
690 0, 0, 0, 0,
691 32, 0, 0, 0, 0,
692 1, 1, 4
693 },
694 {
695 MESA_FORMAT_LUMINANCE_FLOAT16,
696 "MESA_FORMAT_LUMINANCE_FLOAT16",
697 GL_LUMINANCE,
698 GL_FLOAT,
699 0, 0, 0, 0,
700 16, 0, 0, 0, 0,
701 1, 1, 2
702 },
703 {
704 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32,
705 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32",
706 GL_LUMINANCE_ALPHA,
707 GL_FLOAT,
708 0, 0, 0, 32,
709 32, 0, 0, 0, 0,
710 1, 1, 8
711 },
712 {
713 MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16,
714 "MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16",
715 GL_LUMINANCE_ALPHA,
716 GL_FLOAT,
717 0, 0, 0, 16,
718 16, 0, 0, 0, 0,
719 1, 1, 4
720 },
721 {
722 MESA_FORMAT_INTENSITY_FLOAT32,
723 "MESA_FORMAT_INTENSITY_FLOAT32",
724 GL_INTENSITY,
725 GL_FLOAT,
726 0, 0, 0, 0,
727 0, 32, 0, 0, 0,
728 1, 1, 4
729 },
730 {
731 MESA_FORMAT_INTENSITY_FLOAT16,
732 "MESA_FORMAT_INTENSITY_FLOAT16",
733 GL_INTENSITY,
734 GL_FLOAT,
735 0, 0, 0, 0,
736 0, 16, 0, 0, 0,
737 1, 1, 2
738 },
739 {
740 MESA_FORMAT_R_FLOAT32,
741 "MESA_FORMAT_R_FLOAT32",
742 GL_RED,
743 GL_FLOAT,
744 32, 0, 0, 0,
745 0, 0, 0, 0, 0,
746 1, 1, 4
747 },
748 {
749 MESA_FORMAT_R_FLOAT16,
750 "MESA_FORMAT_R_FLOAT16",
751 GL_RED,
752 GL_FLOAT,
753 16, 0, 0, 0,
754 0, 0, 0, 0, 0,
755 1, 1, 2
756 },
757 {
758 MESA_FORMAT_RG_FLOAT32,
759 "MESA_FORMAT_RG_FLOAT32",
760 GL_RG,
761 GL_FLOAT,
762 32, 32, 0, 0,
763 0, 0, 0, 0, 0,
764 1, 1, 8
765 },
766 {
767 MESA_FORMAT_RG_FLOAT16,
768 "MESA_FORMAT_RG_FLOAT16",
769 GL_RG,
770 GL_FLOAT,
771 16, 16, 0, 0,
772 0, 0, 0, 0, 0,
773 1, 1, 4
774 },
775
776 /* unnormalized signed int formats */
777 /* unnormalized unsigned int formats */
778 {
779 MESA_FORMAT_ALPHA_UINT8,
780 "MESA_FORMAT_ALPHA_UINT8",
781 GL_ALPHA,
782 GL_UNSIGNED_INT,
783 0, 0, 0, 8,
784 0, 0, 0, 0, 0,
785 1, 1, 1
786 },
787 {
788 MESA_FORMAT_ALPHA_UINT16,
789 "MESA_FORMAT_ALPHA_UINT16",
790 GL_ALPHA,
791 GL_UNSIGNED_INT,
792 0, 0, 0, 16,
793 0, 0, 0, 0, 0,
794 1, 1, 2
795 },
796 {
797 MESA_FORMAT_ALPHA_UINT32,
798 "MESA_FORMAT_ALPHA_UINT32",
799 GL_ALPHA,
800 GL_UNSIGNED_INT,
801 0, 0, 0, 32,
802 0, 0, 0, 0, 0,
803 1, 1, 4
804 },
805 {
806 MESA_FORMAT_ALPHA_INT8,
807 "MESA_FORMAT_ALPHA_INT8",
808 GL_ALPHA,
809 GL_INT,
810 0, 0, 0, 8,
811 0, 0, 0, 0, 0,
812 1, 1, 1
813 },
814 {
815 MESA_FORMAT_ALPHA_INT16,
816 "MESA_FORMAT_ALPHA_INT16",
817 GL_ALPHA,
818 GL_INT,
819 0, 0, 0, 16,
820 0, 0, 0, 0, 0,
821 1, 1, 2
822 },
823 {
824 MESA_FORMAT_ALPHA_INT32,
825 "MESA_FORMAT_ALPHA_INT32",
826 GL_ALPHA,
827 GL_INT,
828 0, 0, 0, 32,
829 0, 0, 0, 0, 0,
830 1, 1, 4
831 },
832 {
833 MESA_FORMAT_INTENSITY_UINT8,
834 "MESA_FORMAT_INTENSITY_UINT8",
835 GL_INTENSITY,
836 GL_UNSIGNED_INT,
837 0, 0, 0, 0,
838 0, 8, 0, 0, 0,
839 1, 1, 1
840 },
841 {
842 MESA_FORMAT_INTENSITY_UINT16,
843 "MESA_FORMAT_INTENSITY_UINT16",
844 GL_INTENSITY,
845 GL_UNSIGNED_INT,
846 0, 0, 0, 0,
847 0, 16, 0, 0, 0,
848 1, 1, 2
849 },
850 {
851 MESA_FORMAT_INTENSITY_UINT32,
852 "MESA_FORMAT_INTENSITY_UINT32",
853 GL_INTENSITY,
854 GL_UNSIGNED_INT,
855 0, 0, 0, 0,
856 0, 32, 0, 0, 0,
857 1, 1, 4
858 },
859 {
860 MESA_FORMAT_INTENSITY_INT8,
861 "MESA_FORMAT_INTENSITY_INT8",
862 GL_INTENSITY,
863 GL_INT,
864 0, 0, 0, 0,
865 0, 8, 0, 0, 0,
866 1, 1, 1
867 },
868 {
869 MESA_FORMAT_INTENSITY_INT16,
870 "MESA_FORMAT_INTENSITY_INT16",
871 GL_INTENSITY,
872 GL_INT,
873 0, 0, 0, 0,
874 0, 16, 0, 0, 0,
875 1, 1, 2
876 },
877 {
878 MESA_FORMAT_INTENSITY_INT32,
879 "MESA_FORMAT_INTENSITY_INT32",
880 GL_INTENSITY,
881 GL_INT,
882 0, 0, 0, 0,
883 0, 32, 0, 0, 0,
884 1, 1, 4
885 },
886 {
887 MESA_FORMAT_LUMINANCE_UINT8,
888 "MESA_FORMAT_LUMINANCE_UINT8",
889 GL_LUMINANCE,
890 GL_UNSIGNED_INT,
891 0, 0, 0, 0,
892 8, 0, 0, 0, 0,
893 1, 1, 1
894 },
895 {
896 MESA_FORMAT_LUMINANCE_UINT16,
897 "MESA_FORMAT_LUMINANCE_UINT16",
898 GL_LUMINANCE,
899 GL_UNSIGNED_INT,
900 0, 0, 0, 0,
901 16, 0, 0, 0, 0,
902 1, 1, 2
903 },
904 {
905 MESA_FORMAT_LUMINANCE_UINT32,
906 "MESA_FORMAT_LUMINANCE_UINT32",
907 GL_LUMINANCE,
908 GL_UNSIGNED_INT,
909 0, 0, 0, 0,
910 32, 0, 0, 0, 0,
911 1, 1, 4
912 },
913 {
914 MESA_FORMAT_LUMINANCE_INT8,
915 "MESA_FORMAT_LUMINANCE_INT8",
916 GL_LUMINANCE,
917 GL_INT,
918 0, 0, 0, 0,
919 8, 0, 0, 0, 0,
920 1, 1, 1
921 },
922 {
923 MESA_FORMAT_LUMINANCE_INT16,
924 "MESA_FORMAT_LUMINANCE_INT16",
925 GL_LUMINANCE,
926 GL_INT,
927 0, 0, 0, 0,
928 16, 0, 0, 0, 0,
929 1, 1, 2
930 },
931 {
932 MESA_FORMAT_LUMINANCE_INT32,
933 "MESA_FORMAT_LUMINANCE_INT32",
934 GL_LUMINANCE,
935 GL_INT,
936 0, 0, 0, 0,
937 32, 0, 0, 0, 0,
938 1, 1, 4
939 },
940 {
941 MESA_FORMAT_LUMINANCE_ALPHA_UINT8,
942 "MESA_FORMAT_LUMINANCE_ALPHA_UINT8",
943 GL_LUMINANCE_ALPHA,
944 GL_UNSIGNED_INT,
945 0, 0, 0, 8,
946 8, 0, 0, 0, 0,
947 1, 1, 2
948 },
949 {
950 MESA_FORMAT_LUMINANCE_ALPHA_UINT16,
951 "MESA_FORMAT_LUMINANCE_ALPHA_UINT16",
952 GL_LUMINANCE_ALPHA,
953 GL_UNSIGNED_INT,
954 0, 0, 0, 16,
955 16, 0, 0, 0, 0,
956 1, 1, 4
957 },
958 {
959 MESA_FORMAT_LUMINANCE_ALPHA_UINT32,
960 "MESA_FORMAT_LUMINANCE_ALPHA_UINT32",
961 GL_LUMINANCE_ALPHA,
962 GL_UNSIGNED_INT,
963 0, 0, 0, 32,
964 32, 0, 0, 0, 0,
965 1, 1, 8
966 },
967 {
968 MESA_FORMAT_LUMINANCE_ALPHA_INT8,
969 "MESA_FORMAT_LUMINANCE_ALPHA_INT8",
970 GL_LUMINANCE_ALPHA,
971 GL_INT,
972 0, 0, 0, 8,
973 8, 0, 0, 0, 0,
974 1, 1, 2
975 },
976 {
977 MESA_FORMAT_LUMINANCE_ALPHA_INT16,
978 "MESA_FORMAT_LUMINANCE_ALPHA_INT16",
979 GL_LUMINANCE_ALPHA,
980 GL_INT,
981 0, 0, 0, 16,
982 16, 0, 0, 0, 0,
983 1, 1, 4
984 },
985 {
986 MESA_FORMAT_LUMINANCE_ALPHA_INT32,
987 "MESA_FORMAT_LUMINANCE_ALPHA_INT32",
988 GL_LUMINANCE_ALPHA,
989 GL_INT,
990 0, 0, 0, 32,
991 32, 0, 0, 0, 0,
992 1, 1, 8
993 },
994
995 {
996 MESA_FORMAT_R_INT8,
997 "MESA_FORMAT_R_INT8",
998 GL_RED,
999 GL_INT,
1000 8, 0, 0, 0,
1001 0, 0, 0, 0, 0,
1002 1, 1, 1
1003 },
1004 {
1005 MESA_FORMAT_RG_INT8,
1006 "MESA_FORMAT_RG_INT8",
1007 GL_RG,
1008 GL_INT,
1009 8, 8, 0, 0,
1010 0, 0, 0, 0, 0,
1011 1, 1, 2
1012 },
1013 {
1014 MESA_FORMAT_RGB_INT8,
1015 "MESA_FORMAT_RGB_INT8",
1016 GL_RGB,
1017 GL_INT,
1018 8, 8, 8, 0,
1019 0, 0, 0, 0, 0,
1020 1, 1, 3
1021 },
1022 {
1023 MESA_FORMAT_RGBA_INT8,
1024 "MESA_FORMAT_RGBA_INT8",
1025 GL_RGBA,
1026 GL_INT,
1027 8, 8, 8, 8,
1028 0, 0, 0, 0, 0,
1029 1, 1, 4
1030 },
1031 {
1032 MESA_FORMAT_R_INT16,
1033 "MESA_FORMAT_R_INT16",
1034 GL_RED,
1035 GL_INT,
1036 16, 0, 0, 0,
1037 0, 0, 0, 0, 0,
1038 1, 1, 2
1039 },
1040 {
1041 MESA_FORMAT_RG_INT16,
1042 "MESA_FORMAT_RG_INT16",
1043 GL_RG,
1044 GL_INT,
1045 16, 16, 0, 0,
1046 0, 0, 0, 0, 0,
1047 1, 1, 4
1048 },
1049 {
1050 MESA_FORMAT_RGB_INT16,
1051 "MESA_FORMAT_RGB_INT16",
1052 GL_RGB,
1053 GL_INT,
1054 16, 16, 16, 0,
1055 0, 0, 0, 0, 0,
1056 1, 1, 6
1057 },
1058 {
1059 MESA_FORMAT_RGBA_INT16,
1060 "MESA_FORMAT_RGBA_INT16",
1061 GL_RGBA,
1062 GL_INT,
1063 16, 16, 16, 16,
1064 0, 0, 0, 0, 0,
1065 1, 1, 8
1066 },
1067 {
1068 MESA_FORMAT_R_INT32,
1069 "MESA_FORMAT_R_INT32",
1070 GL_RED,
1071 GL_INT,
1072 32, 0, 0, 0,
1073 0, 0, 0, 0, 0,
1074 1, 1, 4
1075 },
1076 {
1077 MESA_FORMAT_RG_INT32,
1078 "MESA_FORMAT_RG_INT32",
1079 GL_RG,
1080 GL_INT,
1081 32, 32, 0, 0,
1082 0, 0, 0, 0, 0,
1083 1, 1, 8
1084 },
1085 {
1086 MESA_FORMAT_RGB_INT32,
1087 "MESA_FORMAT_RGB_INT32",
1088 GL_RGB,
1089 GL_INT,
1090 32, 32, 32, 0,
1091 0, 0, 0, 0, 0,
1092 1, 1, 12
1093 },
1094 {
1095 MESA_FORMAT_RGBA_INT32,
1096 "MESA_FORMAT_RGBA_INT32",
1097 GL_RGBA,
1098 GL_INT,
1099 32, 32, 32, 32,
1100 0, 0, 0, 0, 0,
1101 1, 1, 16
1102 },
1103 {
1104 MESA_FORMAT_R_UINT8,
1105 "MESA_FORMAT_R_UINT8",
1106 GL_RED,
1107 GL_UNSIGNED_INT,
1108 8, 0, 0, 0,
1109 0, 0, 0, 0, 0,
1110 1, 1, 1
1111 },
1112 {
1113 MESA_FORMAT_RG_UINT8,
1114 "MESA_FORMAT_RG_UINT8",
1115 GL_RG,
1116 GL_UNSIGNED_INT,
1117 8, 8, 0, 0,
1118 0, 0, 0, 0, 0,
1119 1, 1, 2
1120 },
1121 {
1122 MESA_FORMAT_RGB_UINT8,
1123 "MESA_FORMAT_RGB_UINT8",
1124 GL_RGB,
1125 GL_UNSIGNED_INT,
1126 8, 8, 8, 0,
1127 0, 0, 0, 0, 0,
1128 1, 1, 3
1129 },
1130 {
1131 MESA_FORMAT_RGBA_UINT8,
1132 "MESA_FORMAT_RGBA_UINT8",
1133 GL_RGBA,
1134 GL_UNSIGNED_INT,
1135 8, 8, 8, 8,
1136 0, 0, 0, 0, 0,
1137 1, 1, 4
1138 },
1139 {
1140 MESA_FORMAT_R_UINT16,
1141 "MESA_FORMAT_R_UINT16",
1142 GL_RED,
1143 GL_UNSIGNED_INT,
1144 16, 0, 0, 0,
1145 0, 0, 0, 0, 0,
1146 1, 1, 2
1147 },
1148 {
1149 MESA_FORMAT_RG_UINT16,
1150 "MESA_FORMAT_RG_UINT16",
1151 GL_RG,
1152 GL_UNSIGNED_INT,
1153 16, 16, 0, 0,
1154 0, 0, 0, 0, 0,
1155 1, 1, 4
1156 },
1157 {
1158 MESA_FORMAT_RGB_UINT16,
1159 "MESA_FORMAT_RGB_UINT16",
1160 GL_RGB,
1161 GL_UNSIGNED_INT,
1162 16, 16, 16, 0,
1163 0, 0, 0, 0, 0,
1164 1, 1, 6
1165 },
1166 {
1167 MESA_FORMAT_RGBA_UINT16,
1168 "MESA_FORMAT_RGBA_UINT16",
1169 GL_RGBA,
1170 GL_UNSIGNED_INT,
1171 16, 16, 16, 16,
1172 0, 0, 0, 0, 0,
1173 1, 1, 8
1174 },
1175 {
1176 MESA_FORMAT_R_UINT32,
1177 "MESA_FORMAT_R_UINT32",
1178 GL_RED,
1179 GL_UNSIGNED_INT,
1180 32, 0, 0, 0,
1181 0, 0, 0, 0, 0,
1182 1, 1, 4
1183 },
1184 {
1185 MESA_FORMAT_RG_UINT32,
1186 "MESA_FORMAT_RG_UINT32",
1187 GL_RG,
1188 GL_UNSIGNED_INT,
1189 32, 32, 0, 0,
1190 0, 0, 0, 0, 0,
1191 1, 1, 8
1192 },
1193 {
1194 MESA_FORMAT_RGB_UINT32,
1195 "MESA_FORMAT_RGB_UINT32",
1196 GL_RGB,
1197 GL_UNSIGNED_INT,
1198 32, 32, 32, 0,
1199 0, 0, 0, 0, 0,
1200 1, 1, 12
1201 },
1202 {
1203 MESA_FORMAT_RGBA_UINT32,
1204 "MESA_FORMAT_RGBA_UINT32",
1205 GL_RGBA,
1206 GL_UNSIGNED_INT,
1207 32, 32, 32, 32,
1208 0, 0, 0, 0, 0,
1209 1, 1, 16
1210 },
1211
1212
1213 {
1214 MESA_FORMAT_DUDV8,
1215 "MESA_FORMAT_DUDV8",
1216 GL_DUDV_ATI,
1217 GL_SIGNED_NORMALIZED,
1218 0, 0, 0, 0,
1219 0, 0, 0, 0, 0,
1220 1, 1, 2
1221 },
1222
1223 /* Signed 8 bits / channel */
1224 {
1225 MESA_FORMAT_SIGNED_R8, /* Name */
1226 "MESA_FORMAT_SIGNED_R8", /* StrName */
1227 GL_RED, /* BaseFormat */
1228 GL_SIGNED_NORMALIZED, /* DataType */
1229 8, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1230 0, 0, 0, 0, 0, /* Lum/Int/Index/Depth/StencilBits */
1231 1, 1, 1 /* BlockWidth/Height,Bytes */
1232 },
1233 {
1234 MESA_FORMAT_SIGNED_RG88_REV,
1235 "MESA_FORMAT_SIGNED_RG88_REV",
1236 GL_RG,
1237 GL_SIGNED_NORMALIZED,
1238 8, 8, 0, 0,
1239 0, 0, 0, 0, 0,
1240 1, 1, 2
1241 },
1242 {
1243 MESA_FORMAT_SIGNED_RGBX8888,
1244 "MESA_FORMAT_SIGNED_RGBX8888",
1245 GL_RGB,
1246 GL_SIGNED_NORMALIZED,
1247 8, 8, 8, 0,
1248 0, 0, 0, 0, 0,
1249 1, 1, 4 /* 4 bpp, but no alpha */
1250 },
1251 {
1252 MESA_FORMAT_SIGNED_RGBA8888,
1253 "MESA_FORMAT_SIGNED_RGBA8888",
1254 GL_RGBA,
1255 GL_SIGNED_NORMALIZED,
1256 8, 8, 8, 8,
1257 0, 0, 0, 0, 0,
1258 1, 1, 4
1259 },
1260 {
1261 MESA_FORMAT_SIGNED_RGBA8888_REV,
1262 "MESA_FORMAT_SIGNED_RGBA8888_REV",
1263 GL_RGBA,
1264 GL_SIGNED_NORMALIZED,
1265 8, 8, 8, 8,
1266 0, 0, 0, 0, 0,
1267 1, 1, 4
1268 },
1269
1270 /* Signed 16 bits / channel */
1271 {
1272 MESA_FORMAT_SIGNED_R16,
1273 "MESA_FORMAT_SIGNED_R16",
1274 GL_RED,
1275 GL_SIGNED_NORMALIZED,
1276 16, 0, 0, 0,
1277 0, 0, 0, 0, 0,
1278 1, 1, 2
1279 },
1280 {
1281 MESA_FORMAT_SIGNED_GR1616,
1282 "MESA_FORMAT_SIGNED_GR1616",
1283 GL_RG,
1284 GL_SIGNED_NORMALIZED,
1285 16, 16, 0, 0,
1286 0, 0, 0, 0, 0,
1287 1, 1, 4
1288 },
1289 {
1290 MESA_FORMAT_SIGNED_RGB_16,
1291 "MESA_FORMAT_SIGNED_RGB_16",
1292 GL_RGB,
1293 GL_SIGNED_NORMALIZED,
1294 16, 16, 16, 0,
1295 0, 0, 0, 0, 0,
1296 1, 1, 6
1297 },
1298 {
1299 MESA_FORMAT_SIGNED_RGBA_16,
1300 "MESA_FORMAT_SIGNED_RGBA_16",
1301 GL_RGBA,
1302 GL_SIGNED_NORMALIZED,
1303 16, 16, 16, 16,
1304 0, 0, 0, 0, 0,
1305 1, 1, 8
1306 },
1307 {
1308 MESA_FORMAT_RGBA_16,
1309 "MESA_FORMAT_RGBA_16",
1310 GL_RGBA,
1311 GL_UNSIGNED_NORMALIZED,
1312 16, 16, 16, 16,
1313 0, 0, 0, 0, 0,
1314 1, 1, 8
1315 },
1316 {
1317 MESA_FORMAT_RED_RGTC1,
1318 "MESA_FORMAT_RED_RGTC1",
1319 GL_RED,
1320 GL_UNSIGNED_NORMALIZED,
1321 4, 0, 0, 0,
1322 0, 0, 0, 0, 0,
1323 4, 4, 8 /* 8 bytes per 4x4 block */
1324 },
1325 {
1326 MESA_FORMAT_SIGNED_RED_RGTC1,
1327 "MESA_FORMAT_SIGNED_RED_RGTC1",
1328 GL_RED,
1329 GL_SIGNED_NORMALIZED,
1330 4, 0, 0, 0,
1331 0, 0, 0, 0, 0,
1332 4, 4, 8 /* 8 bytes per 4x4 block */
1333 },
1334 {
1335 MESA_FORMAT_RG_RGTC2,
1336 "MESA_FORMAT_RG_RGTC2",
1337 GL_RG,
1338 GL_UNSIGNED_NORMALIZED,
1339 4, 4, 0, 0,
1340 0, 0, 0, 0, 0,
1341 4, 4, 16 /* 16 bytes per 4x4 block */
1342 },
1343 {
1344 MESA_FORMAT_SIGNED_RG_RGTC2,
1345 "MESA_FORMAT_SIGNED_RG_RGTC2",
1346 GL_RG,
1347 GL_SIGNED_NORMALIZED,
1348 4, 4, 0, 0,
1349 0, 0, 0, 0, 0,
1350 4, 4, 16 /* 16 bytes per 4x4 block */
1351 },
1352 {
1353 MESA_FORMAT_L_LATC1,
1354 "MESA_FORMAT_L_LATC1",
1355 GL_LUMINANCE,
1356 GL_UNSIGNED_NORMALIZED,
1357 0, 0, 0, 0,
1358 4, 0, 0, 0, 0,
1359 4, 4, 8 /* 8 bytes per 4x4 block */
1360 },
1361 {
1362 MESA_FORMAT_SIGNED_L_LATC1,
1363 "MESA_FORMAT_SIGNED_L_LATC1",
1364 GL_LUMINANCE,
1365 GL_SIGNED_NORMALIZED,
1366 0, 0, 0, 0,
1367 4, 0, 0, 0, 0,
1368 4, 4, 8 /* 8 bytes per 4x4 block */
1369 },
1370 {
1371 MESA_FORMAT_LA_LATC2,
1372 "MESA_FORMAT_LA_LATC2",
1373 GL_LUMINANCE_ALPHA,
1374 GL_UNSIGNED_NORMALIZED,
1375 0, 0, 0, 4,
1376 4, 0, 0, 0, 0,
1377 4, 4, 16 /* 16 bytes per 4x4 block */
1378 },
1379 {
1380 MESA_FORMAT_SIGNED_LA_LATC2,
1381 "MESA_FORMAT_SIGNED_LA_LATC2",
1382 GL_LUMINANCE_ALPHA,
1383 GL_SIGNED_NORMALIZED,
1384 0, 0, 0, 4,
1385 4, 0, 0, 0, 0,
1386 4, 4, 16 /* 16 bytes per 4x4 block */
1387 },
1388
1389 /* Signed formats from EXT_texture_snorm that are not in GL3.1 */
1390 {
1391 MESA_FORMAT_SIGNED_A8,
1392 "MESA_FORMAT_SIGNED_A8",
1393 GL_ALPHA,
1394 GL_SIGNED_NORMALIZED,
1395 0, 0, 0, 8,
1396 0, 0, 0, 0, 0,
1397 1, 1, 1
1398 },
1399 {
1400 MESA_FORMAT_SIGNED_L8,
1401 "MESA_FORMAT_SIGNED_L8",
1402 GL_LUMINANCE,
1403 GL_SIGNED_NORMALIZED,
1404 0, 0, 0, 0,
1405 8, 0, 0, 0, 0,
1406 1, 1, 1
1407 },
1408 {
1409 MESA_FORMAT_SIGNED_AL88,
1410 "MESA_FORMAT_SIGNED_AL88",
1411 GL_LUMINANCE_ALPHA,
1412 GL_SIGNED_NORMALIZED,
1413 0, 0, 0, 8,
1414 8, 0, 0, 0, 0,
1415 1, 1, 2
1416 },
1417 {
1418 MESA_FORMAT_SIGNED_I8,
1419 "MESA_FORMAT_SIGNED_I8",
1420 GL_INTENSITY,
1421 GL_SIGNED_NORMALIZED,
1422 0, 0, 0, 0,
1423 0, 8, 0, 0, 0,
1424 1, 1, 1
1425 },
1426 {
1427 MESA_FORMAT_SIGNED_A16,
1428 "MESA_FORMAT_SIGNED_A16",
1429 GL_ALPHA,
1430 GL_SIGNED_NORMALIZED,
1431 0, 0, 0, 16,
1432 0, 0, 0, 0, 0,
1433 1, 1, 2
1434 },
1435 {
1436 MESA_FORMAT_SIGNED_L16,
1437 "MESA_FORMAT_SIGNED_L16",
1438 GL_LUMINANCE,
1439 GL_SIGNED_NORMALIZED,
1440 0, 0, 0, 0,
1441 16, 0, 0, 0, 0,
1442 1, 1, 2
1443 },
1444 {
1445 MESA_FORMAT_SIGNED_AL1616,
1446 "MESA_FORMAT_SIGNED_AL1616",
1447 GL_LUMINANCE_ALPHA,
1448 GL_SIGNED_NORMALIZED,
1449 0, 0, 0, 16,
1450 16, 0, 0, 0, 0,
1451 1, 1, 4
1452 },
1453 {
1454 MESA_FORMAT_SIGNED_I16,
1455 "MESA_FORMAT_SIGNED_I16",
1456 GL_INTENSITY,
1457 GL_SIGNED_NORMALIZED,
1458 0, 0, 0, 0,
1459 0, 16, 0, 0, 0,
1460 1, 1, 2
1461 },
1462 {
1463 MESA_FORMAT_RGB9_E5_FLOAT,
1464 "MESA_FORMAT_RGB9_E5",
1465 GL_RGB,
1466 GL_FLOAT,
1467 9, 9, 9, 0,
1468 0, 0, 0, 0, 0,
1469 1, 1, 4
1470 },
1471 {
1472 MESA_FORMAT_R11_G11_B10_FLOAT,
1473 "MESA_FORMAT_R11_G11_B10_FLOAT",
1474 GL_RGB,
1475 GL_FLOAT,
1476 11, 11, 10, 0,
1477 0, 0, 0, 0, 0,
1478 1, 1, 4
1479 },
1480 /* ARB_depth_buffer_float */
1481 {
1482 MESA_FORMAT_Z32_FLOAT, /* Name */
1483 "MESA_FORMAT_Z32_FLOAT", /* StrName */
1484 GL_DEPTH_COMPONENT, /* BaseFormat */
1485 GL_FLOAT, /* DataType */
1486 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1487 0, 0, 0, 32, 0, /* Lum/Int/Index/Depth/StencilBits */
1488 1, 1, 4 /* BlockWidth/Height,Bytes */
1489 },
1490 {
1491 MESA_FORMAT_Z32_FLOAT_X24S8, /* Name */
1492 "MESA_FORMAT_Z32_FLOAT_X24S8", /* StrName */
1493 GL_DEPTH_STENCIL, /* BaseFormat */
1494 /* DataType here is used to answer GL_TEXTURE_DEPTH_TYPE queries, and is
1495 * never used for stencil because stencil is always GL_UNSIGNED_INT.
1496 */
1497 GL_FLOAT, /* DataType */
1498 0, 0, 0, 0, /* Red/Green/Blue/AlphaBits */
1499 0, 0, 0, 32, 8, /* Lum/Int/Index/Depth/StencilBits */
1500 1, 1, 8 /* BlockWidth/Height,Bytes */
1501 },
1502 {
1503 MESA_FORMAT_ARGB2101010_UINT,
1504 "MESA_FORMAT_ARGB2101010_UINT",
1505 GL_RGBA,
1506 GL_UNSIGNED_INT,
1507 10, 10, 10, 2,
1508 0, 0, 0, 0, 0,
1509 1, 1, 4
1510 },
1511 };
1512
1513
1514
1515 static const struct gl_format_info *
1516 _mesa_get_format_info(gl_format format)
1517 {
1518 const struct gl_format_info *info = &format_info[format];
1519 assert(info->Name == format);
1520 return info;
1521 }
1522
1523
1524 /** Return string name of format (for debugging) */
1525 const char *
1526 _mesa_get_format_name(gl_format format)
1527 {
1528 const struct gl_format_info *info = _mesa_get_format_info(format);
1529 return info->StrName;
1530 }
1531
1532
1533
1534 /**
1535 * Return bytes needed to store a block of pixels in the given format.
1536 * Normally, a block is 1x1 (a single pixel). But for compressed formats
1537 * a block may be 4x4 or 8x4, etc.
1538 *
1539 * Note: not GLuint, so as not to coerce math to unsigned. cf. fdo #37351
1540 */
1541 GLint
1542 _mesa_get_format_bytes(gl_format format)
1543 {
1544 const struct gl_format_info *info = _mesa_get_format_info(format);
1545 ASSERT(info->BytesPerBlock);
1546 return info->BytesPerBlock;
1547 }
1548
1549
1550 /**
1551 * Return bits per component for the given format.
1552 * \param format one of MESA_FORMAT_x
1553 * \param pname the component, such as GL_RED_BITS, GL_TEXTURE_BLUE_BITS, etc.
1554 */
1555 GLint
1556 _mesa_get_format_bits(gl_format format, GLenum pname)
1557 {
1558 const struct gl_format_info *info = _mesa_get_format_info(format);
1559
1560 switch (pname) {
1561 case GL_RED_BITS:
1562 case GL_TEXTURE_RED_SIZE:
1563 case GL_RENDERBUFFER_RED_SIZE_EXT:
1564 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1565 return info->RedBits;
1566 case GL_GREEN_BITS:
1567 case GL_TEXTURE_GREEN_SIZE:
1568 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1569 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1570 return info->GreenBits;
1571 case GL_BLUE_BITS:
1572 case GL_TEXTURE_BLUE_SIZE:
1573 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1574 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1575 return info->BlueBits;
1576 case GL_ALPHA_BITS:
1577 case GL_TEXTURE_ALPHA_SIZE:
1578 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1579 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1580 return info->AlphaBits;
1581 case GL_TEXTURE_INTENSITY_SIZE:
1582 return info->IntensityBits;
1583 case GL_TEXTURE_LUMINANCE_SIZE:
1584 return info->LuminanceBits;
1585 case GL_INDEX_BITS:
1586 return info->IndexBits;
1587 case GL_DEPTH_BITS:
1588 case GL_TEXTURE_DEPTH_SIZE_ARB:
1589 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1590 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1591 return info->DepthBits;
1592 case GL_STENCIL_BITS:
1593 case GL_TEXTURE_STENCIL_SIZE_EXT:
1594 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1595 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1596 return info->StencilBits;
1597 default:
1598 _mesa_problem(NULL, "bad pname in _mesa_get_format_bits()");
1599 return 0;
1600 }
1601 }
1602
1603
1604 /**
1605 * Return the data type (or more specifically, the data representation)
1606 * for the given format.
1607 * The return value will be one of:
1608 * GL_UNSIGNED_NORMALIZED = unsigned int representing [0,1]
1609 * GL_SIGNED_NORMALIZED = signed int representing [-1, 1]
1610 * GL_UNSIGNED_INT = an ordinary unsigned integer
1611 * GL_INT = an ordinary signed integer
1612 * GL_FLOAT = an ordinary float
1613 */
1614 GLenum
1615 _mesa_get_format_datatype(gl_format format)
1616 {
1617 const struct gl_format_info *info = _mesa_get_format_info(format);
1618 return info->DataType;
1619 }
1620
1621
1622 /**
1623 * Return the basic format for the given type. The result will be one of
1624 * GL_RGB, GL_RGBA, GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_INTENSITY,
1625 * GL_YCBCR_MESA, GL_DEPTH_COMPONENT, GL_STENCIL_INDEX, GL_DEPTH_STENCIL.
1626 */
1627 GLenum
1628 _mesa_get_format_base_format(gl_format format)
1629 {
1630 const struct gl_format_info *info = _mesa_get_format_info(format);
1631 return info->BaseFormat;
1632 }
1633
1634
1635 /**
1636 * Return the block size (in pixels) for the given format. Normally
1637 * the block size is 1x1. But compressed formats will have block sizes
1638 * of 4x4 or 8x4 pixels, etc.
1639 * \param bw returns block width in pixels
1640 * \param bh returns block height in pixels
1641 */
1642 void
1643 _mesa_get_format_block_size(gl_format format, GLuint *bw, GLuint *bh)
1644 {
1645 const struct gl_format_info *info = _mesa_get_format_info(format);
1646 *bw = info->BlockWidth;
1647 *bh = info->BlockHeight;
1648 }
1649
1650
1651 /** Is the given format a compressed format? */
1652 GLboolean
1653 _mesa_is_format_compressed(gl_format format)
1654 {
1655 const struct gl_format_info *info = _mesa_get_format_info(format);
1656 return info->BlockWidth > 1 || info->BlockHeight > 1;
1657 }
1658
1659
1660 /**
1661 * Determine if the given format represents a packed depth/stencil buffer.
1662 */
1663 GLboolean
1664 _mesa_is_format_packed_depth_stencil(gl_format format)
1665 {
1666 const struct gl_format_info *info = _mesa_get_format_info(format);
1667
1668 return info->BaseFormat == GL_DEPTH_STENCIL;
1669 }
1670
1671
1672 /**
1673 * Is the given format a signed/unsigned integer color format?
1674 */
1675 GLboolean
1676 _mesa_is_format_integer_color(gl_format format)
1677 {
1678 const struct gl_format_info *info = _mesa_get_format_info(format);
1679 return (info->DataType == GL_INT || info->DataType == GL_UNSIGNED_INT) &&
1680 info->BaseFormat != GL_DEPTH_COMPONENT &&
1681 info->BaseFormat != GL_DEPTH_STENCIL &&
1682 info->BaseFormat != GL_STENCIL_INDEX;
1683 }
1684
1685
1686 /**
1687 * Return color encoding for given format.
1688 * \return GL_LINEAR or GL_SRGB
1689 */
1690 GLenum
1691 _mesa_get_format_color_encoding(gl_format format)
1692 {
1693 /* XXX this info should be encoded in gl_format_info */
1694 switch (format) {
1695 case MESA_FORMAT_SRGB8:
1696 case MESA_FORMAT_SRGBA8:
1697 case MESA_FORMAT_SARGB8:
1698 case MESA_FORMAT_SL8:
1699 case MESA_FORMAT_SLA8:
1700 case MESA_FORMAT_SRGB_DXT1:
1701 case MESA_FORMAT_SRGBA_DXT1:
1702 case MESA_FORMAT_SRGBA_DXT3:
1703 case MESA_FORMAT_SRGBA_DXT5:
1704 return GL_SRGB;
1705 default:
1706 return GL_LINEAR;
1707 }
1708 }
1709
1710
1711 /**
1712 * For an sRGB format, return the corresponding linear color space format.
1713 * For non-sRGB formats, return the format as-is.
1714 */
1715 gl_format
1716 _mesa_get_srgb_format_linear(gl_format format)
1717 {
1718 switch (format) {
1719 case MESA_FORMAT_SRGB8:
1720 format = MESA_FORMAT_RGB888;
1721 break;
1722 case MESA_FORMAT_SRGBA8:
1723 format = MESA_FORMAT_RGBA8888;
1724 break;
1725 case MESA_FORMAT_SARGB8:
1726 format = MESA_FORMAT_ARGB8888;
1727 break;
1728 case MESA_FORMAT_SL8:
1729 format = MESA_FORMAT_L8;
1730 break;
1731 case MESA_FORMAT_SLA8:
1732 format = MESA_FORMAT_AL88;
1733 break;
1734 case MESA_FORMAT_SRGB_DXT1:
1735 format = MESA_FORMAT_RGB_DXT1;
1736 break;
1737 case MESA_FORMAT_SRGBA_DXT1:
1738 format = MESA_FORMAT_RGBA_DXT1;
1739 break;
1740 case MESA_FORMAT_SRGBA_DXT3:
1741 format = MESA_FORMAT_RGBA_DXT3;
1742 break;
1743 case MESA_FORMAT_SRGBA_DXT5:
1744 format = MESA_FORMAT_RGBA_DXT5;
1745 break;
1746 default:
1747 break;
1748 }
1749 return format;
1750 }
1751
1752
1753 /**
1754 * If the given format is a compressed format, return a corresponding
1755 * uncompressed format.
1756 */
1757 gl_format
1758 _mesa_get_uncompressed_format(gl_format format)
1759 {
1760 switch (format) {
1761 case MESA_FORMAT_RGB_FXT1:
1762 return MESA_FORMAT_RGB888;
1763 case MESA_FORMAT_RGBA_FXT1:
1764 return MESA_FORMAT_RGBA8888;
1765 case MESA_FORMAT_RGB_DXT1:
1766 case MESA_FORMAT_SRGB_DXT1:
1767 return MESA_FORMAT_RGB888;
1768 case MESA_FORMAT_RGBA_DXT1:
1769 case MESA_FORMAT_SRGBA_DXT1:
1770 return MESA_FORMAT_RGBA8888;
1771 case MESA_FORMAT_RGBA_DXT3:
1772 case MESA_FORMAT_SRGBA_DXT3:
1773 return MESA_FORMAT_RGBA8888;
1774 case MESA_FORMAT_RGBA_DXT5:
1775 case MESA_FORMAT_SRGBA_DXT5:
1776 return MESA_FORMAT_RGBA8888;
1777 case MESA_FORMAT_RED_RGTC1:
1778 return MESA_FORMAT_R8;
1779 case MESA_FORMAT_SIGNED_RED_RGTC1:
1780 return MESA_FORMAT_SIGNED_R8;
1781 case MESA_FORMAT_RG_RGTC2:
1782 return MESA_FORMAT_RG88;
1783 case MESA_FORMAT_SIGNED_RG_RGTC2:
1784 return MESA_FORMAT_SIGNED_RG88_REV;
1785 case MESA_FORMAT_L_LATC1:
1786 return MESA_FORMAT_L8;
1787 case MESA_FORMAT_SIGNED_L_LATC1:
1788 return MESA_FORMAT_SIGNED_L8;
1789 case MESA_FORMAT_LA_LATC2:
1790 return MESA_FORMAT_AL88;
1791 case MESA_FORMAT_SIGNED_LA_LATC2:
1792 return MESA_FORMAT_SIGNED_AL88;
1793 default:
1794 #ifdef DEBUG
1795 assert(!_mesa_is_format_compressed(format));
1796 #endif
1797 return format;
1798 }
1799 }
1800
1801
1802 GLuint
1803 _mesa_format_num_components(gl_format format)
1804 {
1805 const struct gl_format_info *info = _mesa_get_format_info(format);
1806 return ((info->RedBits > 0) +
1807 (info->GreenBits > 0) +
1808 (info->BlueBits > 0) +
1809 (info->AlphaBits > 0) +
1810 (info->LuminanceBits > 0) +
1811 (info->IntensityBits > 0) +
1812 (info->DepthBits > 0) +
1813 (info->StencilBits > 0));
1814 }
1815
1816
1817 /**
1818 * Return number of bytes needed to store an image of the given size
1819 * in the given format.
1820 */
1821 GLuint
1822 _mesa_format_image_size(gl_format format, GLsizei width,
1823 GLsizei height, GLsizei depth)
1824 {
1825 const struct gl_format_info *info = _mesa_get_format_info(format);
1826 /* Strictly speaking, a conditional isn't needed here */
1827 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1828 /* compressed format (2D only for now) */
1829 const GLuint bw = info->BlockWidth, bh = info->BlockHeight;
1830 const GLuint wblocks = (width + bw - 1) / bw;
1831 const GLuint hblocks = (height + bh - 1) / bh;
1832 const GLuint sz = wblocks * hblocks * info->BytesPerBlock;
1833 assert(depth == 1);
1834 return sz;
1835 }
1836 else {
1837 /* non-compressed */
1838 const GLuint sz = width * height * depth * info->BytesPerBlock;
1839 return sz;
1840 }
1841 }
1842
1843
1844 /**
1845 * Same as _mesa_format_image_size() but returns a 64-bit value to
1846 * accomodate very large textures.
1847 */
1848 uint64_t
1849 _mesa_format_image_size64(gl_format format, GLsizei width,
1850 GLsizei height, GLsizei depth)
1851 {
1852 const struct gl_format_info *info = _mesa_get_format_info(format);
1853 /* Strictly speaking, a conditional isn't needed here */
1854 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1855 /* compressed format (2D only for now) */
1856 const uint64_t bw = info->BlockWidth, bh = info->BlockHeight;
1857 const uint64_t wblocks = (width + bw - 1) / bw;
1858 const uint64_t hblocks = (height + bh - 1) / bh;
1859 const uint64_t sz = wblocks * hblocks * info->BytesPerBlock;
1860 assert(depth == 1);
1861 return sz;
1862 }
1863 else {
1864 /* non-compressed */
1865 const uint64_t sz = ((uint64_t) width *
1866 (uint64_t) height *
1867 (uint64_t) depth *
1868 info->BytesPerBlock);
1869 return sz;
1870 }
1871 }
1872
1873
1874
1875 GLint
1876 _mesa_format_row_stride(gl_format format, GLsizei width)
1877 {
1878 const struct gl_format_info *info = _mesa_get_format_info(format);
1879 /* Strictly speaking, a conditional isn't needed here */
1880 if (info->BlockWidth > 1 || info->BlockHeight > 1) {
1881 /* compressed format */
1882 const GLuint bw = info->BlockWidth;
1883 const GLuint wblocks = (width + bw - 1) / bw;
1884 const GLint stride = wblocks * info->BytesPerBlock;
1885 return stride;
1886 }
1887 else {
1888 const GLint stride = width * info->BytesPerBlock;
1889 return stride;
1890 }
1891 }
1892
1893
1894 /**
1895 * Debug/test: check that all formats are handled in the
1896 * _mesa_format_to_type_and_comps() function. When new pixel formats
1897 * are added to Mesa, that function needs to be updated.
1898 * This is a no-op after the first call.
1899 */
1900 static void
1901 check_format_to_type_and_comps(void)
1902 {
1903 gl_format f;
1904
1905 for (f = MESA_FORMAT_NONE + 1; f < MESA_FORMAT_COUNT; f++) {
1906 GLenum datatype = 0;
1907 GLuint comps = 0;
1908 /* This function will emit a problem/warning if the format is
1909 * not handled.
1910 */
1911 _mesa_format_to_type_and_comps(f, &datatype, &comps);
1912 }
1913 }
1914
1915
1916 /**
1917 * Do sanity checking of the format info table.
1918 */
1919 void
1920 _mesa_test_formats(void)
1921 {
1922 GLuint i;
1923
1924 assert(Elements(format_info) == MESA_FORMAT_COUNT);
1925
1926 for (i = 0; i < MESA_FORMAT_COUNT; i++) {
1927 const struct gl_format_info *info = _mesa_get_format_info(i);
1928 assert(info);
1929
1930 assert(info->Name == i);
1931
1932 if (info->Name == MESA_FORMAT_NONE)
1933 continue;
1934
1935 if (info->BlockWidth == 1 && info->BlockHeight == 1) {
1936 if (info->RedBits > 0) {
1937 GLuint t = info->RedBits + info->GreenBits
1938 + info->BlueBits + info->AlphaBits;
1939 assert(t / 8 <= info->BytesPerBlock);
1940 (void) t;
1941 }
1942 }
1943
1944 assert(info->DataType == GL_UNSIGNED_NORMALIZED ||
1945 info->DataType == GL_SIGNED_NORMALIZED ||
1946 info->DataType == GL_UNSIGNED_INT ||
1947 info->DataType == GL_INT ||
1948 info->DataType == GL_FLOAT ||
1949 /* Z32_FLOAT_X24S8 has DataType of GL_NONE */
1950 info->DataType == GL_NONE);
1951
1952 if (info->BaseFormat == GL_RGB) {
1953 assert(info->RedBits > 0);
1954 assert(info->GreenBits > 0);
1955 assert(info->BlueBits > 0);
1956 assert(info->AlphaBits == 0);
1957 assert(info->LuminanceBits == 0);
1958 assert(info->IntensityBits == 0);
1959 }
1960 else if (info->BaseFormat == GL_RGBA) {
1961 assert(info->RedBits > 0);
1962 assert(info->GreenBits > 0);
1963 assert(info->BlueBits > 0);
1964 assert(info->AlphaBits > 0);
1965 assert(info->LuminanceBits == 0);
1966 assert(info->IntensityBits == 0);
1967 }
1968 else if (info->BaseFormat == GL_RG) {
1969 assert(info->RedBits > 0);
1970 assert(info->GreenBits > 0);
1971 assert(info->BlueBits == 0);
1972 assert(info->AlphaBits == 0);
1973 assert(info->LuminanceBits == 0);
1974 assert(info->IntensityBits == 0);
1975 }
1976 else if (info->BaseFormat == GL_RED) {
1977 assert(info->RedBits > 0);
1978 assert(info->GreenBits == 0);
1979 assert(info->BlueBits == 0);
1980 assert(info->AlphaBits == 0);
1981 assert(info->LuminanceBits == 0);
1982 assert(info->IntensityBits == 0);
1983 }
1984 else if (info->BaseFormat == GL_LUMINANCE) {
1985 assert(info->RedBits == 0);
1986 assert(info->GreenBits == 0);
1987 assert(info->BlueBits == 0);
1988 assert(info->AlphaBits == 0);
1989 assert(info->LuminanceBits > 0);
1990 assert(info->IntensityBits == 0);
1991 }
1992 else if (info->BaseFormat == GL_INTENSITY) {
1993 assert(info->RedBits == 0);
1994 assert(info->GreenBits == 0);
1995 assert(info->BlueBits == 0);
1996 assert(info->AlphaBits == 0);
1997 assert(info->LuminanceBits == 0);
1998 assert(info->IntensityBits > 0);
1999 }
2000 }
2001
2002 check_format_to_type_and_comps();
2003 }
2004
2005
2006
2007 /**
2008 * Return datatype and number of components per texel for the given gl_format.
2009 * Only used for mipmap generation code.
2010 */
2011 void
2012 _mesa_format_to_type_and_comps(gl_format format,
2013 GLenum *datatype, GLuint *comps)
2014 {
2015 switch (format) {
2016 case MESA_FORMAT_RGBA8888:
2017 case MESA_FORMAT_RGBA8888_REV:
2018 case MESA_FORMAT_ARGB8888:
2019 case MESA_FORMAT_ARGB8888_REV:
2020 case MESA_FORMAT_RGBX8888:
2021 case MESA_FORMAT_RGBX8888_REV:
2022 case MESA_FORMAT_XRGB8888:
2023 case MESA_FORMAT_XRGB8888_REV:
2024 *datatype = GL_UNSIGNED_BYTE;
2025 *comps = 4;
2026 return;
2027 case MESA_FORMAT_RGB888:
2028 case MESA_FORMAT_BGR888:
2029 *datatype = GL_UNSIGNED_BYTE;
2030 *comps = 3;
2031 return;
2032 case MESA_FORMAT_RGB565:
2033 case MESA_FORMAT_RGB565_REV:
2034 *datatype = GL_UNSIGNED_SHORT_5_6_5;
2035 *comps = 3;
2036 return;
2037
2038 case MESA_FORMAT_ARGB4444:
2039 case MESA_FORMAT_ARGB4444_REV:
2040 *datatype = GL_UNSIGNED_SHORT_4_4_4_4;
2041 *comps = 4;
2042 return;
2043
2044 case MESA_FORMAT_ARGB1555:
2045 case MESA_FORMAT_ARGB1555_REV:
2046 *datatype = GL_UNSIGNED_SHORT_1_5_5_5_REV;
2047 *comps = 4;
2048 return;
2049
2050 case MESA_FORMAT_ARGB2101010:
2051 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2052 *comps = 4;
2053 return;
2054
2055 case MESA_FORMAT_RGBA5551:
2056 *datatype = GL_UNSIGNED_SHORT_5_5_5_1;
2057 *comps = 4;
2058 return;
2059
2060 case MESA_FORMAT_AL44:
2061 *datatype = MESA_UNSIGNED_BYTE_4_4;
2062 *comps = 2;
2063 return;
2064
2065 case MESA_FORMAT_AL88:
2066 case MESA_FORMAT_AL88_REV:
2067 case MESA_FORMAT_RG88:
2068 case MESA_FORMAT_RG88_REV:
2069 *datatype = GL_UNSIGNED_BYTE;
2070 *comps = 2;
2071 return;
2072
2073 case MESA_FORMAT_AL1616:
2074 case MESA_FORMAT_AL1616_REV:
2075 case MESA_FORMAT_RG1616:
2076 case MESA_FORMAT_RG1616_REV:
2077 *datatype = GL_UNSIGNED_SHORT;
2078 *comps = 2;
2079 return;
2080
2081 case MESA_FORMAT_R16:
2082 case MESA_FORMAT_A16:
2083 case MESA_FORMAT_L16:
2084 case MESA_FORMAT_I16:
2085 *datatype = GL_UNSIGNED_SHORT;
2086 *comps = 1;
2087 return;
2088
2089 case MESA_FORMAT_RGB332:
2090 *datatype = GL_UNSIGNED_BYTE_3_3_2;
2091 *comps = 3;
2092 return;
2093
2094 case MESA_FORMAT_A8:
2095 case MESA_FORMAT_L8:
2096 case MESA_FORMAT_I8:
2097 case MESA_FORMAT_R8:
2098 case MESA_FORMAT_S8:
2099 *datatype = GL_UNSIGNED_BYTE;
2100 *comps = 1;
2101 return;
2102
2103 case MESA_FORMAT_YCBCR:
2104 case MESA_FORMAT_YCBCR_REV:
2105 *datatype = GL_UNSIGNED_SHORT;
2106 *comps = 2;
2107 return;
2108
2109 case MESA_FORMAT_Z24_S8:
2110 *datatype = GL_UNSIGNED_INT_24_8_MESA;
2111 *comps = 2;
2112 return;
2113
2114 case MESA_FORMAT_S8_Z24:
2115 *datatype = GL_UNSIGNED_INT_8_24_REV_MESA;
2116 *comps = 2;
2117 return;
2118
2119 case MESA_FORMAT_Z16:
2120 *datatype = GL_UNSIGNED_SHORT;
2121 *comps = 1;
2122 return;
2123
2124 case MESA_FORMAT_X8_Z24:
2125 *datatype = GL_UNSIGNED_INT;
2126 *comps = 1;
2127 return;
2128
2129 case MESA_FORMAT_Z24_X8:
2130 *datatype = GL_UNSIGNED_INT;
2131 *comps = 1;
2132 return;
2133
2134 case MESA_FORMAT_Z32:
2135 *datatype = GL_UNSIGNED_INT;
2136 *comps = 1;
2137 return;
2138
2139 case MESA_FORMAT_Z32_FLOAT:
2140 *datatype = GL_FLOAT;
2141 *comps = 1;
2142 return;
2143
2144 case MESA_FORMAT_Z32_FLOAT_X24S8:
2145 *datatype = GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
2146 *comps = 1;
2147 return;
2148
2149 case MESA_FORMAT_DUDV8:
2150 *datatype = GL_BYTE;
2151 *comps = 2;
2152 return;
2153
2154 case MESA_FORMAT_SIGNED_R8:
2155 case MESA_FORMAT_SIGNED_A8:
2156 case MESA_FORMAT_SIGNED_L8:
2157 case MESA_FORMAT_SIGNED_I8:
2158 *datatype = GL_BYTE;
2159 *comps = 1;
2160 return;
2161 case MESA_FORMAT_SIGNED_RG88_REV:
2162 case MESA_FORMAT_SIGNED_AL88:
2163 *datatype = GL_BYTE;
2164 *comps = 2;
2165 return;
2166 case MESA_FORMAT_SIGNED_RGBA8888:
2167 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2168 case MESA_FORMAT_SIGNED_RGBX8888:
2169 *datatype = GL_BYTE;
2170 *comps = 4;
2171 return;
2172
2173 case MESA_FORMAT_RGBA_16:
2174 *datatype = GL_UNSIGNED_SHORT;
2175 *comps = 4;
2176 return;
2177
2178 case MESA_FORMAT_SIGNED_R16:
2179 case MESA_FORMAT_SIGNED_A16:
2180 case MESA_FORMAT_SIGNED_L16:
2181 case MESA_FORMAT_SIGNED_I16:
2182 *datatype = GL_SHORT;
2183 *comps = 1;
2184 return;
2185 case MESA_FORMAT_SIGNED_GR1616:
2186 case MESA_FORMAT_SIGNED_AL1616:
2187 *datatype = GL_SHORT;
2188 *comps = 2;
2189 return;
2190 case MESA_FORMAT_SIGNED_RGB_16:
2191 *datatype = GL_SHORT;
2192 *comps = 3;
2193 return;
2194 case MESA_FORMAT_SIGNED_RGBA_16:
2195 *datatype = GL_SHORT;
2196 *comps = 4;
2197 return;
2198
2199 #if FEATURE_EXT_texture_sRGB
2200 case MESA_FORMAT_SRGB8:
2201 *datatype = GL_UNSIGNED_BYTE;
2202 *comps = 3;
2203 return;
2204 case MESA_FORMAT_SRGBA8:
2205 case MESA_FORMAT_SARGB8:
2206 *datatype = GL_UNSIGNED_BYTE;
2207 *comps = 4;
2208 return;
2209 case MESA_FORMAT_SL8:
2210 *datatype = GL_UNSIGNED_BYTE;
2211 *comps = 1;
2212 return;
2213 case MESA_FORMAT_SLA8:
2214 *datatype = GL_UNSIGNED_BYTE;
2215 *comps = 2;
2216 return;
2217 #endif
2218
2219 #if FEATURE_texture_fxt1
2220 case MESA_FORMAT_RGB_FXT1:
2221 case MESA_FORMAT_RGBA_FXT1:
2222 #endif
2223 #if FEATURE_texture_s3tc
2224 case MESA_FORMAT_RGB_DXT1:
2225 case MESA_FORMAT_RGBA_DXT1:
2226 case MESA_FORMAT_RGBA_DXT3:
2227 case MESA_FORMAT_RGBA_DXT5:
2228 #if FEATURE_EXT_texture_sRGB
2229 case MESA_FORMAT_SRGB_DXT1:
2230 case MESA_FORMAT_SRGBA_DXT1:
2231 case MESA_FORMAT_SRGBA_DXT3:
2232 case MESA_FORMAT_SRGBA_DXT5:
2233 #endif
2234 #endif
2235 case MESA_FORMAT_RED_RGTC1:
2236 case MESA_FORMAT_SIGNED_RED_RGTC1:
2237 case MESA_FORMAT_RG_RGTC2:
2238 case MESA_FORMAT_SIGNED_RG_RGTC2:
2239 case MESA_FORMAT_L_LATC1:
2240 case MESA_FORMAT_SIGNED_L_LATC1:
2241 case MESA_FORMAT_LA_LATC2:
2242 case MESA_FORMAT_SIGNED_LA_LATC2:
2243 /* XXX generate error instead? */
2244 *datatype = GL_UNSIGNED_BYTE;
2245 *comps = 0;
2246 return;
2247
2248 case MESA_FORMAT_RGBA_FLOAT32:
2249 *datatype = GL_FLOAT;
2250 *comps = 4;
2251 return;
2252 case MESA_FORMAT_RGBA_FLOAT16:
2253 *datatype = GL_HALF_FLOAT_ARB;
2254 *comps = 4;
2255 return;
2256 case MESA_FORMAT_RGB_FLOAT32:
2257 *datatype = GL_FLOAT;
2258 *comps = 3;
2259 return;
2260 case MESA_FORMAT_RGB_FLOAT16:
2261 *datatype = GL_HALF_FLOAT_ARB;
2262 *comps = 3;
2263 return;
2264 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2265 case MESA_FORMAT_RG_FLOAT32:
2266 *datatype = GL_FLOAT;
2267 *comps = 2;
2268 return;
2269 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2270 case MESA_FORMAT_RG_FLOAT16:
2271 *datatype = GL_HALF_FLOAT_ARB;
2272 *comps = 2;
2273 return;
2274 case MESA_FORMAT_ALPHA_FLOAT32:
2275 case MESA_FORMAT_LUMINANCE_FLOAT32:
2276 case MESA_FORMAT_INTENSITY_FLOAT32:
2277 case MESA_FORMAT_R_FLOAT32:
2278 *datatype = GL_FLOAT;
2279 *comps = 1;
2280 return;
2281 case MESA_FORMAT_ALPHA_FLOAT16:
2282 case MESA_FORMAT_LUMINANCE_FLOAT16:
2283 case MESA_FORMAT_INTENSITY_FLOAT16:
2284 case MESA_FORMAT_R_FLOAT16:
2285 *datatype = GL_HALF_FLOAT_ARB;
2286 *comps = 1;
2287 return;
2288
2289 case MESA_FORMAT_ALPHA_UINT8:
2290 case MESA_FORMAT_LUMINANCE_UINT8:
2291 case MESA_FORMAT_INTENSITY_UINT8:
2292 *datatype = GL_UNSIGNED_BYTE;
2293 *comps = 1;
2294 return;
2295 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2296 *datatype = GL_UNSIGNED_BYTE;
2297 *comps = 2;
2298 return;
2299
2300 case MESA_FORMAT_ALPHA_UINT16:
2301 case MESA_FORMAT_LUMINANCE_UINT16:
2302 case MESA_FORMAT_INTENSITY_UINT16:
2303 *datatype = GL_UNSIGNED_SHORT;
2304 *comps = 1;
2305 return;
2306 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2307 *datatype = GL_UNSIGNED_SHORT;
2308 *comps = 2;
2309 return;
2310 case MESA_FORMAT_ALPHA_UINT32:
2311 case MESA_FORMAT_LUMINANCE_UINT32:
2312 case MESA_FORMAT_INTENSITY_UINT32:
2313 *datatype = GL_UNSIGNED_INT;
2314 *comps = 1;
2315 return;
2316 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2317 *datatype = GL_UNSIGNED_INT;
2318 *comps = 2;
2319 return;
2320 case MESA_FORMAT_ALPHA_INT8:
2321 case MESA_FORMAT_LUMINANCE_INT8:
2322 case MESA_FORMAT_INTENSITY_INT8:
2323 *datatype = GL_BYTE;
2324 *comps = 1;
2325 return;
2326 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2327 *datatype = GL_BYTE;
2328 *comps = 2;
2329 return;
2330
2331 case MESA_FORMAT_ALPHA_INT16:
2332 case MESA_FORMAT_LUMINANCE_INT16:
2333 case MESA_FORMAT_INTENSITY_INT16:
2334 *datatype = GL_SHORT;
2335 *comps = 1;
2336 return;
2337 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2338 *datatype = GL_SHORT;
2339 *comps = 2;
2340 return;
2341
2342 case MESA_FORMAT_ALPHA_INT32:
2343 case MESA_FORMAT_LUMINANCE_INT32:
2344 case MESA_FORMAT_INTENSITY_INT32:
2345 *datatype = GL_INT;
2346 *comps = 1;
2347 return;
2348 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2349 *datatype = GL_INT;
2350 *comps = 2;
2351 return;
2352
2353 case MESA_FORMAT_R_INT8:
2354 *datatype = GL_BYTE;
2355 *comps = 1;
2356 return;
2357 case MESA_FORMAT_RG_INT8:
2358 *datatype = GL_BYTE;
2359 *comps = 2;
2360 return;
2361 case MESA_FORMAT_RGB_INT8:
2362 *datatype = GL_BYTE;
2363 *comps = 3;
2364 return;
2365 case MESA_FORMAT_RGBA_INT8:
2366 *datatype = GL_BYTE;
2367 *comps = 4;
2368 return;
2369 case MESA_FORMAT_R_INT16:
2370 *datatype = GL_SHORT;
2371 *comps = 1;
2372 return;
2373 case MESA_FORMAT_RG_INT16:
2374 *datatype = GL_SHORT;
2375 *comps = 2;
2376 return;
2377 case MESA_FORMAT_RGB_INT16:
2378 *datatype = GL_SHORT;
2379 *comps = 3;
2380 return;
2381 case MESA_FORMAT_RGBA_INT16:
2382 *datatype = GL_SHORT;
2383 *comps = 4;
2384 return;
2385 case MESA_FORMAT_R_INT32:
2386 *datatype = GL_INT;
2387 *comps = 1;
2388 return;
2389 case MESA_FORMAT_RG_INT32:
2390 *datatype = GL_INT;
2391 *comps = 2;
2392 return;
2393 case MESA_FORMAT_RGB_INT32:
2394 *datatype = GL_INT;
2395 *comps = 3;
2396 return;
2397 case MESA_FORMAT_RGBA_INT32:
2398 *datatype = GL_INT;
2399 *comps = 4;
2400 return;
2401
2402 /**
2403 * \name Non-normalized unsigned integer formats.
2404 */
2405 case MESA_FORMAT_R_UINT8:
2406 *datatype = GL_UNSIGNED_BYTE;
2407 *comps = 1;
2408 return;
2409 case MESA_FORMAT_RG_UINT8:
2410 *datatype = GL_UNSIGNED_BYTE;
2411 *comps = 2;
2412 return;
2413 case MESA_FORMAT_RGB_UINT8:
2414 *datatype = GL_UNSIGNED_BYTE;
2415 *comps = 3;
2416 return;
2417 case MESA_FORMAT_RGBA_UINT8:
2418 *datatype = GL_UNSIGNED_BYTE;
2419 *comps = 4;
2420 return;
2421 case MESA_FORMAT_R_UINT16:
2422 *datatype = GL_UNSIGNED_SHORT;
2423 *comps = 1;
2424 return;
2425 case MESA_FORMAT_RG_UINT16:
2426 *datatype = GL_UNSIGNED_SHORT;
2427 *comps = 2;
2428 return;
2429 case MESA_FORMAT_RGB_UINT16:
2430 *datatype = GL_UNSIGNED_SHORT;
2431 *comps = 3;
2432 return;
2433 case MESA_FORMAT_RGBA_UINT16:
2434 *datatype = GL_UNSIGNED_SHORT;
2435 *comps = 4;
2436 return;
2437 case MESA_FORMAT_R_UINT32:
2438 *datatype = GL_UNSIGNED_INT;
2439 *comps = 1;
2440 return;
2441 case MESA_FORMAT_RG_UINT32:
2442 *datatype = GL_UNSIGNED_INT;
2443 *comps = 2;
2444 return;
2445 case MESA_FORMAT_RGB_UINT32:
2446 *datatype = GL_UNSIGNED_INT;
2447 *comps = 3;
2448 return;
2449 case MESA_FORMAT_RGBA_UINT32:
2450 *datatype = GL_UNSIGNED_INT;
2451 *comps = 4;
2452 return;
2453
2454 case MESA_FORMAT_RGB9_E5_FLOAT:
2455 *datatype = GL_UNSIGNED_INT_5_9_9_9_REV;
2456 *comps = 3;
2457 return;
2458
2459 case MESA_FORMAT_R11_G11_B10_FLOAT:
2460 *datatype = GL_UNSIGNED_INT_10F_11F_11F_REV;
2461 *comps = 3;
2462 return;
2463
2464 case MESA_FORMAT_ARGB2101010_UINT:
2465 *datatype = GL_UNSIGNED_INT_2_10_10_10_REV;
2466 *comps = 4;
2467 return;
2468
2469 case MESA_FORMAT_COUNT:
2470 assert(0);
2471 return;
2472
2473 case MESA_FORMAT_NONE:
2474 /* For debug builds, warn if any formats are not handled */
2475 #ifdef DEBUG
2476 default:
2477 #endif
2478 _mesa_problem(NULL, "bad format %s in _mesa_format_to_type_and_comps",
2479 _mesa_get_format_name(format));
2480 *datatype = 0;
2481 *comps = 1;
2482 }
2483 }
2484
2485 /**
2486 * Check if a gl_format exactly matches a GL formaat/type combination
2487 * such that we can use memcpy() from one to the other.
2488 *
2489 * Note: this matching assumes that GL_PACK/UNPACK_SWAP_BYTES is unset.
2490 *
2491 * \return GL_TRUE if the formats match, GL_FALSE otherwise.
2492 */
2493 GLboolean
2494 _mesa_format_matches_format_and_type(gl_format gl_format,
2495 GLenum format, GLenum type)
2496 {
2497 const GLboolean littleEndian = _mesa_little_endian();
2498
2499 /* Note: When reading a GL format/type combination, the format lists channel
2500 * assignments from most significant channel in the type to least
2501 * significant. A type with _REV indicates that the assignments are
2502 * swapped, so they are listed from least significant to most significant.
2503 *
2504 * For sanity, please keep this switch statement ordered the same as the
2505 * enums in formats.h.
2506 */
2507
2508 switch (gl_format) {
2509
2510 case MESA_FORMAT_NONE:
2511 case MESA_FORMAT_COUNT:
2512 return GL_FALSE;
2513
2514 case MESA_FORMAT_RGBA8888:
2515 return ((format == GL_RGBA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
2516 (type == GL_UNSIGNED_BYTE && !littleEndian))) ||
2517 (format == GL_ABGR_EXT && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
2518 (type == GL_UNSIGNED_BYTE && littleEndian))));
2519
2520 case MESA_FORMAT_RGBA8888_REV:
2521 return ((format == GL_RGBA && type == GL_UNSIGNED_INT_8_8_8_8_REV));
2522
2523 case MESA_FORMAT_ARGB8888:
2524 return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8_REV ||
2525 (type == GL_UNSIGNED_BYTE && littleEndian))));
2526
2527 case MESA_FORMAT_ARGB8888_REV:
2528 return ((format == GL_BGRA && (type == GL_UNSIGNED_INT_8_8_8_8 ||
2529 (type == GL_UNSIGNED_BYTE && !littleEndian))));
2530
2531 case MESA_FORMAT_RGBX8888:
2532 case MESA_FORMAT_RGBX8888_REV:
2533 return GL_FALSE;
2534
2535 case MESA_FORMAT_XRGB8888:
2536 case MESA_FORMAT_XRGB8888_REV:
2537 return GL_FALSE;
2538
2539 case MESA_FORMAT_RGB888:
2540 return format == GL_RGB && type == GL_UNSIGNED_BYTE && littleEndian;
2541
2542 case MESA_FORMAT_BGR888:
2543 return GL_FALSE;
2544
2545 case MESA_FORMAT_RGB565:
2546 return format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5;
2547 case MESA_FORMAT_RGB565_REV:
2548 /* Some of the 16-bit MESA_FORMATs that would seem to correspond to
2549 * GL_UNSIGNED_SHORT_* are byte-swapped instead of channel-reversed,
2550 * according to formats.h, so they can't be matched.
2551 */
2552 return GL_FALSE;
2553
2554 case MESA_FORMAT_ARGB4444:
2555 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_4_4_4_4_REV;
2556 case MESA_FORMAT_ARGB4444_REV:
2557 return GL_FALSE;
2558
2559 case MESA_FORMAT_RGBA5551:
2560 return format == GL_RGBA && type == GL_UNSIGNED_SHORT_5_5_5_1;
2561
2562 case MESA_FORMAT_ARGB1555:
2563 return format == GL_BGRA && type == GL_UNSIGNED_SHORT_1_5_5_5_REV;
2564 case MESA_FORMAT_ARGB1555_REV:
2565 return GL_FALSE;
2566
2567 case MESA_FORMAT_AL44:
2568 return GL_FALSE;
2569 case MESA_FORMAT_AL88:
2570 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_BYTE && littleEndian;
2571 case MESA_FORMAT_AL88_REV:
2572 return GL_FALSE;
2573
2574 case MESA_FORMAT_AL1616:
2575 return format == GL_LUMINANCE_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2576 case MESA_FORMAT_AL1616_REV:
2577 return GL_FALSE;
2578
2579 case MESA_FORMAT_RGB332:
2580 return format == GL_RGB && type == GL_UNSIGNED_BYTE_3_3_2;
2581
2582 case MESA_FORMAT_A8:
2583 return format == GL_ALPHA && type == GL_UNSIGNED_BYTE;
2584 case MESA_FORMAT_A16:
2585 return format == GL_ALPHA && type == GL_UNSIGNED_SHORT && littleEndian;
2586 case MESA_FORMAT_L8:
2587 return format == GL_LUMINANCE && type == GL_UNSIGNED_BYTE;
2588 case MESA_FORMAT_L16:
2589 return format == GL_LUMINANCE && type == GL_UNSIGNED_SHORT && littleEndian;
2590 case MESA_FORMAT_I8:
2591 return format == GL_INTENSITY && type == GL_UNSIGNED_BYTE;
2592 case MESA_FORMAT_I16:
2593 return format == GL_INTENSITY && type == GL_UNSIGNED_SHORT && littleEndian;
2594
2595 case MESA_FORMAT_YCBCR:
2596 case MESA_FORMAT_YCBCR_REV:
2597 return GL_FALSE;
2598
2599 case MESA_FORMAT_R8:
2600 return format == GL_RED && type == GL_UNSIGNED_BYTE;
2601 case MESA_FORMAT_RG88:
2602 return format == GL_RG && type == GL_UNSIGNED_BYTE && littleEndian;
2603 case MESA_FORMAT_RG88_REV:
2604 return GL_FALSE;
2605
2606 case MESA_FORMAT_R16:
2607 return format == GL_RED && type == GL_UNSIGNED_SHORT && littleEndian;
2608 case MESA_FORMAT_RG1616:
2609 return format == GL_RG && type == GL_UNSIGNED_SHORT && littleEndian;
2610 case MESA_FORMAT_RG1616_REV:
2611 return GL_FALSE;
2612
2613 case MESA_FORMAT_ARGB2101010:
2614 return format == GL_BGRA && type == GL_UNSIGNED_INT_2_10_10_10_REV;
2615
2616 case MESA_FORMAT_Z24_S8:
2617 return format == GL_DEPTH_STENCIL && type == GL_UNSIGNED_INT_24_8;
2618 case MESA_FORMAT_Z24_X8:
2619 case MESA_FORMAT_S8_Z24:
2620 return GL_FALSE;
2621
2622 case MESA_FORMAT_Z16:
2623 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_SHORT;
2624
2625 case MESA_FORMAT_X8_Z24:
2626 return GL_FALSE;
2627
2628 case MESA_FORMAT_Z32:
2629 return format == GL_DEPTH_COMPONENT && type == GL_UNSIGNED_INT;
2630
2631 case MESA_FORMAT_S8:
2632 return GL_FALSE;
2633
2634 case MESA_FORMAT_SRGB8:
2635 case MESA_FORMAT_SRGBA8:
2636 case MESA_FORMAT_SARGB8:
2637 case MESA_FORMAT_SL8:
2638 case MESA_FORMAT_SLA8:
2639 case MESA_FORMAT_SRGB_DXT1:
2640 case MESA_FORMAT_SRGBA_DXT1:
2641 case MESA_FORMAT_SRGBA_DXT3:
2642 case MESA_FORMAT_SRGBA_DXT5:
2643 return GL_FALSE;
2644
2645 case MESA_FORMAT_RGB_FXT1:
2646 case MESA_FORMAT_RGBA_FXT1:
2647 case MESA_FORMAT_RGB_DXT1:
2648 case MESA_FORMAT_RGBA_DXT1:
2649 case MESA_FORMAT_RGBA_DXT3:
2650 case MESA_FORMAT_RGBA_DXT5:
2651 return GL_FALSE;
2652
2653 case MESA_FORMAT_RGBA_FLOAT32:
2654 return format == GL_RGBA && type == GL_FLOAT;
2655 case MESA_FORMAT_RGBA_FLOAT16:
2656 return format == GL_RGBA && type == GL_HALF_FLOAT;
2657
2658 case MESA_FORMAT_RGB_FLOAT32:
2659 return format == GL_RGB && type == GL_FLOAT;
2660 case MESA_FORMAT_RGB_FLOAT16:
2661 return format == GL_RGB && type == GL_HALF_FLOAT;
2662
2663 case MESA_FORMAT_ALPHA_FLOAT32:
2664 return format == GL_ALPHA && type == GL_FLOAT;
2665 case MESA_FORMAT_ALPHA_FLOAT16:
2666 return format == GL_ALPHA && type == GL_HALF_FLOAT;
2667
2668 case MESA_FORMAT_LUMINANCE_FLOAT32:
2669 return format == GL_LUMINANCE && type == GL_FLOAT;
2670 case MESA_FORMAT_LUMINANCE_FLOAT16:
2671 return format == GL_LUMINANCE && type == GL_HALF_FLOAT;
2672
2673 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
2674 return format == GL_LUMINANCE_ALPHA && type == GL_FLOAT;
2675 case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT16:
2676 return format == GL_LUMINANCE_ALPHA && type == GL_HALF_FLOAT;
2677
2678 case MESA_FORMAT_INTENSITY_FLOAT32:
2679 return format == GL_INTENSITY && type == GL_FLOAT;
2680 case MESA_FORMAT_INTENSITY_FLOAT16:
2681 return format == GL_INTENSITY && type == GL_HALF_FLOAT;
2682
2683 case MESA_FORMAT_R_FLOAT32:
2684 return format == GL_RED && type == GL_FLOAT;
2685 case MESA_FORMAT_R_FLOAT16:
2686 return format == GL_RED && type == GL_HALF_FLOAT;
2687
2688 case MESA_FORMAT_RG_FLOAT32:
2689 return format == GL_RG && type == GL_FLOAT;
2690 case MESA_FORMAT_RG_FLOAT16:
2691 return format == GL_RG && type == GL_HALF_FLOAT;
2692
2693 /* FINISHME: What do we want to do for GL_EXT_texture_integer? */
2694 case MESA_FORMAT_ALPHA_UINT8:
2695 case MESA_FORMAT_ALPHA_UINT16:
2696 case MESA_FORMAT_ALPHA_UINT32:
2697 case MESA_FORMAT_ALPHA_INT8:
2698 case MESA_FORMAT_ALPHA_INT16:
2699 case MESA_FORMAT_ALPHA_INT32:
2700 return GL_FALSE;
2701
2702 case MESA_FORMAT_INTENSITY_UINT8:
2703 case MESA_FORMAT_INTENSITY_UINT16:
2704 case MESA_FORMAT_INTENSITY_UINT32:
2705 case MESA_FORMAT_INTENSITY_INT8:
2706 case MESA_FORMAT_INTENSITY_INT16:
2707 case MESA_FORMAT_INTENSITY_INT32:
2708 return GL_FALSE;
2709
2710 case MESA_FORMAT_LUMINANCE_UINT8:
2711 case MESA_FORMAT_LUMINANCE_UINT16:
2712 case MESA_FORMAT_LUMINANCE_UINT32:
2713 case MESA_FORMAT_LUMINANCE_INT8:
2714 case MESA_FORMAT_LUMINANCE_INT16:
2715 case MESA_FORMAT_LUMINANCE_INT32:
2716 return GL_FALSE;
2717
2718 case MESA_FORMAT_LUMINANCE_ALPHA_UINT8:
2719 case MESA_FORMAT_LUMINANCE_ALPHA_UINT16:
2720 case MESA_FORMAT_LUMINANCE_ALPHA_UINT32:
2721 case MESA_FORMAT_LUMINANCE_ALPHA_INT8:
2722 case MESA_FORMAT_LUMINANCE_ALPHA_INT16:
2723 case MESA_FORMAT_LUMINANCE_ALPHA_INT32:
2724 return GL_FALSE;
2725
2726 case MESA_FORMAT_R_INT8:
2727 case MESA_FORMAT_RG_INT8:
2728 case MESA_FORMAT_RGB_INT8:
2729 case MESA_FORMAT_RGBA_INT8:
2730 case MESA_FORMAT_R_INT16:
2731 case MESA_FORMAT_RG_INT16:
2732 case MESA_FORMAT_RGB_INT16:
2733 case MESA_FORMAT_RGBA_INT16:
2734 case MESA_FORMAT_R_INT32:
2735 case MESA_FORMAT_RG_INT32:
2736 case MESA_FORMAT_RGB_INT32:
2737 case MESA_FORMAT_RGBA_INT32:
2738 return GL_FALSE;
2739
2740 case MESA_FORMAT_R_UINT8:
2741 case MESA_FORMAT_RG_UINT8:
2742 case MESA_FORMAT_RGB_UINT8:
2743 case MESA_FORMAT_RGBA_UINT8:
2744 case MESA_FORMAT_R_UINT16:
2745 case MESA_FORMAT_RG_UINT16:
2746 case MESA_FORMAT_RGB_UINT16:
2747 case MESA_FORMAT_RGBA_UINT16:
2748 case MESA_FORMAT_R_UINT32:
2749 case MESA_FORMAT_RG_UINT32:
2750 case MESA_FORMAT_RGB_UINT32:
2751 case MESA_FORMAT_RGBA_UINT32:
2752 return GL_FALSE;
2753
2754 case MESA_FORMAT_DUDV8:
2755 case MESA_FORMAT_SIGNED_R8:
2756 case MESA_FORMAT_SIGNED_RG88_REV:
2757 case MESA_FORMAT_SIGNED_RGBX8888:
2758 case MESA_FORMAT_SIGNED_RGBA8888:
2759 case MESA_FORMAT_SIGNED_RGBA8888_REV:
2760 case MESA_FORMAT_SIGNED_R16:
2761 case MESA_FORMAT_SIGNED_GR1616:
2762 case MESA_FORMAT_SIGNED_RGB_16:
2763 case MESA_FORMAT_SIGNED_RGBA_16:
2764 case MESA_FORMAT_RGBA_16:
2765 /* FINISHME: SNORM */
2766 return GL_FALSE;
2767
2768 case MESA_FORMAT_RED_RGTC1:
2769 case MESA_FORMAT_SIGNED_RED_RGTC1:
2770 case MESA_FORMAT_RG_RGTC2:
2771 case MESA_FORMAT_SIGNED_RG_RGTC2:
2772 return GL_FALSE;
2773
2774 case MESA_FORMAT_L_LATC1:
2775 case MESA_FORMAT_SIGNED_L_LATC1:
2776 case MESA_FORMAT_LA_LATC2:
2777 case MESA_FORMAT_SIGNED_LA_LATC2:
2778 return GL_FALSE;
2779
2780 case MESA_FORMAT_SIGNED_A8:
2781 case MESA_FORMAT_SIGNED_L8:
2782 case MESA_FORMAT_SIGNED_AL88:
2783 case MESA_FORMAT_SIGNED_I8:
2784 case MESA_FORMAT_SIGNED_A16:
2785 case MESA_FORMAT_SIGNED_L16:
2786 case MESA_FORMAT_SIGNED_AL1616:
2787 case MESA_FORMAT_SIGNED_I16:
2788 /* FINISHME: SNORM */
2789 return GL_FALSE;
2790
2791 case MESA_FORMAT_ARGB2101010_UINT:
2792 return GL_FALSE;
2793
2794 case MESA_FORMAT_RGB9_E5_FLOAT:
2795 return format == GL_RGB && type == GL_UNSIGNED_INT_5_9_9_9_REV;
2796 case MESA_FORMAT_R11_G11_B10_FLOAT:
2797 return format == GL_RGB && type == GL_UNSIGNED_INT_10F_11F_11F_REV;
2798
2799 case MESA_FORMAT_Z32_FLOAT:
2800 return format == GL_DEPTH_COMPONENT && type == GL_FLOAT;
2801
2802 case MESA_FORMAT_Z32_FLOAT_X24S8:
2803 return GL_FALSE;
2804 }
2805
2806 return GL_FALSE;
2807 }